Organic Phosphor Patents (Class 313/504)
  • Patent number: 12010906
    Abstract: Provided is a display device capable of displaying a high-quality image even under high temperature conditions, the display device including a flexible substrate, a pixel circuit layer arranged on the flexible substrate, and including a thin-film transistor and a through hole extending to the flexible substrate, a first organic layer arranged on the pixel circuit layer and in contact with the flexible substrate through the through hole, an inorganic layer arranged on the first organic layer to cover an upper surface of the first organic layer, a pixel electrode arranged on the inorganic layer, and an encapsulation layer arranged on the pixel electrode, and including a first inorganic encapsulation layer, a second inorganic encapsulation layer, and an organic encapsulation layer between the first inorganic encapsulation layer and the second inorganic encapsulation layer.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: June 11, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jongho Hong, Sangwoo Kim, Jaemin Shin, Junhyeong Park
  • Patent number: 12010866
    Abstract: A display panel includes a base substrate, in which a hole area, an active area surrounding the hole area, and a peripheral area adjacent to the active area are defined, a circuit layer including a first circuit insulating layer on the base substrate, a second circuit insulating layer on the first circuit insulating layer, and a thin film transistor on the active area, a display layer including a first display insulating layer on the circuit layer, a second display insulating layer on the first display insulating layer, and a light emitting element on the active area and connected to the thin film transistor, a guide pattern on the circuit layer between the light emitting element and the groove part, and an encapsulation layer which covers the light emitting element and including first and second inorganic layers and an organic layer. The organic layer covers at least a portion of the guide pattern.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: June 11, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyoungsub Lee, Junghan Seo, Woo Yong Sung
  • Patent number: 12010899
    Abstract: A display apparatus includes a light-emitting device and an optical lens are stacked on an emission area of a device substrate. A black matrix and a touch electrode may be disposed on a non-emission area of the device substrate. An encapsulation unit covering the light-emitting device and an optical insulating layer covering the black matrix may be disposed on the emission area and the non-emission area of the device substrate. The touch electrode and the optical lens may be disposed on the optical insulating layer. A lens barrier may be disposed on the optical insulating layer. The optical lens may be surrounded by the lens barrier. Thus, in the display apparatus, a deform of the optical lens due to a reflow process may be prevented. Therefore, in the display apparatus, decreasing the quality of the image due to a process of forming the optical lens may be prevented.
    Type: Grant
    Filed: July 31, 2023
    Date of Patent: June 11, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Tae Gyu Lee, Jung Eun Lee
  • Patent number: 12010861
    Abstract: Provided is a light-emitting element which has an anode, a light-emitting layer over the anode, an electron-transport layer over and in contact with the light-emitting layer, an electron-injection layer over and in contact with the electron-transport layer, and a cathode over and in contact with the electron-injection layer. The light-emitting layer has an electron-transport property, and the electron-transport layer includes an anthracene derivative. The light-emitting layer further includes a phosphorescent substance. This device structure allows the formation of a highly efficient blue-emissive light-emitting element even though the phosphorescent substance has higher triplet energy than the anthracene derivative which directly contacts with the light-emitting layer.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: June 11, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoko Shitagaki, Takahiro Ishisone, Satoshi Seo, Takeyoshi Watabe
  • Patent number: 11999819
    Abstract: The present invention relates to formulations comprising at least one hyper-branched polymer which contains 30 to 70 mol % of at least one hole-transporting recurring unit A, 5 to 30 mol % of least one branching recurring unit B, 5 to 30 mol % of at least one further recurring unit C and 5 to 40 mol % of least one end group E, where the recurring units A, B and C are different from one another, and at least one organic solvent, characterised in that the formulation has a viscosity of ?25 mPas. The present invention furthermore relates to the corresponding hyperbranched polymers and to processes for the preparation thereof. The present invention additionally also relates to the use of the hyperbranched polymers according to the invention in electronic or opto-electronic devices, and to electronic or opto-electronic devices containing these polymers.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: June 4, 2024
    Assignee: Merck Patent GmbH
    Inventors: Beate Burkhart, Miriam Engel, Matthias Hengst, Holger Heil, Manuel Hamburger, Christoph Leonhard, Gaelle Bealle
  • Patent number: 12004370
    Abstract: The present application relates to a display panel, a display screen and a display terminal, wherein the display panel comprises a substrate, having a first surface for an external light entering therein and a second surface for an external light exiting therefrom; and at least one diffractive relief structure, provided on the second surface of the substrate and used for reducing or eliminating a diffractive light formed on the second surface by the external light passing through the substrate. The diffractive relief structure is arranged on the second surface of the display panel, and can be used to effectively eliminate the positive and negative order diffractive light formed on the second surface of the substrate by the external light entering the first surface of the substrate and exiting from the second surface.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: June 4, 2024
    Assignee: KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD.
    Inventor: Lixiong Xu
  • Patent number: 12002791
    Abstract: A light emitting device, a display panel, and a display panel manufacturing method are provided in the embodiments of the present disclosure. The light emitting device includes a first electrode, and second electrode arranged around the first electrode, and the second electrode is symmetrically disposed with respect to the first electrode. A distance from each of points on the second electrode to a center point of the first electrode is equal. When the light emitting device is transferring, any point on the second electrode abuts the corresponding electrode, thereby reducing the difficulty in a mass transfer process of the light-emitting device.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: June 4, 2024
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Kunpeng He
  • Patent number: 11997858
    Abstract: An organic EL device includes at least an anode, a first light-emitting layer, an intermediate layer, a second light-emitting layer, and a cathode in this order. The intermediate layer is adjacent to the first light-emitting layer and the second light-emitting layer. The first light-emitting layer and the second light-emitting layer can trap electrons. A material constituting the intermediate layer is a hydrocarbon that has a HOMO level equal to or lower than the HOMO level of a host of the first light-emitting layer and that has a high S1 level.
    Type: Grant
    Filed: December 31, 2020
    Date of Patent: May 28, 2024
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hirokazu Miyashita, Itaru Takaya, Takayuki Ito, Moe Takahira, Tomona Yamaguchi, Satoru Shiobara, Tomokazu Kotake, Haruna Iida, Naoki Yamada, Jun Kamatani
  • Patent number: 11997884
    Abstract: The display substrate includes sub-pixels of different colors. The sub-pixels are arranged as pixel columns in a first direction. Sub-pixels in the same pixel column have the same color. The display substrate includes a substrate, a first electrode layer, a pixel defining structure and an organic light-emitting layer. The pixel defining structure includes a first pixel defining structure, and a second pixel defining structure. The organic light-emitting layer includes color light-emitting layers with different colors. One light-emitting layer includes main body parts in a display region and a virtual part in a bezel region. The virtual part is connected to at least two main body parts in the light-emitting layer of the same color.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: May 28, 2024
    Assignee: BOE Technology Group Co., Ltd.
    Inventor: Yue Zhang
  • Patent number: 11987592
    Abstract: Provided is a compound of Chemical Formula 1: wherein: A is a benzene ring; X1 and X2 are each independently O or S; Y1 to Y3 are each independently N or CH, provided that at least one of Y1 to Y3 is N; Ar1 and Ar2 are each independently a substituted or unsubstituted: C6-?aryl or C2- 60 heteroaryl containing at least one of N, O, and S; R1 to R3 are each independently hydrogen, deuterium, halogen, cyano, nitro, amino, or a substituted or unsubstituted: C1-60 alkyl, C3-60 cycloalkyl, C2-60 alkenyl, C6-60 aryl, or C2-60 heteroaryl containing at least one of N, O, and S; and R?and R5 are each independently hydrogen, deuterium, halogen, cyano, nitro, amino, or a substituted or unsubstituted: C1-60 alkyl, C3-?cycloalkyl, C2-60 alkenyl, C6-60 aryl, or C2-60 heteroaryl containing at least one of N, O, and S, and an organic light emitting device including the same.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: May 21, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Sang Duk Suh, Dong Hoon Lee, Boon Jae Jang, Min Woo Jung, Jungha Lee, Su Jin Han, Seulchan Park, Sunghyun Hwang
  • Patent number: 11991906
    Abstract: The present disclosure provides a display substrate and a manufacturing method thereof, and a display device. The display substrate includes a plurality of pixel regions, each of the pixel regions including a display region provided with a pixel electrode and a driving region provided with a pixel circuit. The pixel circuit includes at least one pixel transistor having a first electrode and a second electrode which are coupled to an active layer of the at least one pixel transistor through connection vias, respectively. The driving region is further provided with a first plate of a storage capacitor, the first plate is insulated from and overlapped with the first electrode and the second electrode of the pixel transistor in a direction perpendicular to the display substrate, and the first plate is provided with openings at positions corresponding to at least some of the connection vias.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: May 21, 2024
    Assignees: Beijing BOE Technology Development Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yongda Ma, Xueguang Hao, Yong Qiao, Xinyin Wu
  • Patent number: 11991899
    Abstract: A display panel, a preparation method, and a display device are disclosed, including an array substrate, an organic light emitting diode (OLED) light emitting device disposed on a side of the array substrate, and a scattering layer disposed on a side of the OLED light emitting device away from the array substrate, wherein the scattering layer has a plurality of micropores.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: May 21, 2024
    Assignee: TCL China Star Optoelectronics Technology Co., Ltd.
    Inventor: Linglian Wu
  • Patent number: 11991896
    Abstract: A display panel comprises a first substrate including a display area and a non-display area surrounding the display area, a light emitting diode disposed in the display area on the first substrate, an adhesive layer covering the display area and the non-display area on the first substrate, and a second substrate bonded to the first substrate by the adhesive layer, wherein the second substrate includes a barrier structure portion for defining a plurality of open spaces on one surface of the second substrate that adjoins the adhesive layer.
    Type: Grant
    Filed: March 23, 2023
    Date of Patent: May 21, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: SeongYong Uhm, SeungHan Lee, Tae-Kyung Kim, KyuNam Kim, Dohyung Kim
  • Patent number: 11981692
    Abstract: An organometallic compound represented by Formula 1: wherein, in Formula 1, groups and variables are the same as described in the specification.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: May 14, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyuyoung Hwang, Sangdong Kim, Sungjun Kim, Soyeon Kim, Jungin Lee, Jiyoun Lee, Yoonhyun Kwak, Ohyun Kwon
  • Patent number: 11985864
    Abstract: Provided is a display panel, including: a backplane; a first electrode and an auxiliary layer, disposed on a same side of the backplane, wherein a distance between a surface of the first electrode distal from the backplane and the backplane is shorter than or equal to a distance between a surface of the auxiliary layer distal from the backplane and the backplane; a pixel defining layer, at least partially disposed on a side of the auxiliary layer distal from the backplane; a second electrode, disposed on a side of the pixel defining layer distal from the backplane; and an auxiliary electrode, disposed on a side of the second electrode distal from the backplane, wherein an orthographic projection of the auxiliary electrode onto the backplane is located within an orthographic projection of the pixel defining layer onto the backplane.
    Type: Grant
    Filed: October 20, 2021
    Date of Patent: May 14, 2024
    Assignees: Hefei BOE Joint Technology Co., Lid., BOE Technology Group Co., Ltd.
    Inventors: Xinxin Wang, Minghung Hsu
  • Patent number: 11978728
    Abstract: A display device includes a substrate, an emission layer provided on the substrate and a reflective layer provided on the emission layer. The emission layer has an emission region that emits light, the reflective layer has a first opening, the emission region overlaps the first opening in a direction perpendicular to an upper surface of the substrate and a first width of the emission region is smaller than a second width of the first opening.
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: May 7, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hoyoung Ahn, Junhee Choi, Kyungwook Hwang, Jinjoo Park
  • Patent number: 11978742
    Abstract: A metal oxide film including a crystal part and having highly stable physical properties is provided. The size of the crystal part is less than or equal to 10 nm, which allows the observation of circumferentially arranged spots in a nanobeam electron diffraction pattern of the cross section of the metal oxide film when the measurement area is greater than or equal to 5 nm? and less than or equal to 10 nm?.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: May 7, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Masahiro Takahashi, Takuya Hirohashi, Masashi Tsubuku, Noritaka Ishihara, Masashi Oota
  • Patent number: 11974458
    Abstract: An organic light-emitting diode (OLED) display panel and an OLED display device are provided. In a second display area of the OLED display panel, a light transmission enhancement layer is disposed on a side of a light-emitting layer away from a driving circuit layer. By disposing the light transmission enhancement layer on the light-emitting layer, a resonant microcavity of the OLED display panel can be changed by the light transmission enhancement layer. Therefore, light transmittance of the OLED display panel is increased, thereby improving an imaging effect of an under-screen camera.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: April 30, 2024
    Assignees: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Yuanyuan Zhao
  • Patent number: 11974485
    Abstract: A display device include a light-emitting panel having first to third light-emitting diodes and a color panel on the light-emitting panel. The color panel includes first to third color areas that transmit light of different colors and a light-blocking area. The light-emitting panel includes two first power lines spaced apart from each other, connecting electrodes electrically connected to the two first power lines, and an insulating layer on the connecting electrodes, the insulating layer having openings each of which exposing a respective one of the connecting electrodes. The first light-emitting diode, the second light-emitting diode, and the third light-emitting diode are spaced apart from one another between the two first power lines. The second color area is smaller than each of the first color area and the third color area in size. The second color area is disposed between the first color area and the third color area.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: April 30, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kangmoon Jo, Sungjae Moon, Ansu Lee
  • Patent number: 11968883
    Abstract: The present invention includes novel polycyclic alkyl amino carbenes as ligands for metal complexes. These compounds may be useful as emitter materials for phosphorescent electroluminescent devices.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: April 23, 2024
    Assignee: Universal Display Corporation
    Inventors: Mingjuan Su, Morgan C. MacInnis, Daniel W. Silverstein, Tongxiang (Aaron) Lu, George Fitzgerald
  • Patent number: 11964928
    Abstract: A novel organic compound is provided. A novel organic compound having a carrier-transport property is provided. A novel organic compound having a hole-transport property is provided. An organic compound having a low refractive index is provided. An organic compound having a low refractive index and a carrier-transport property is provided. An organic compound having a low refractive index and a hole-transport property is provided. An organic compound represented by the following general formula (G1) is provided.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: April 23, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomohiro Kubota, Takeyoshi Watabe, Satoshi Seo, Nobuharu Ohsawa
  • Patent number: 11968852
    Abstract: A light-emitting device includes: a first electrode and a second electrode that are superposed; an emitting layer (EML) located between the first electrode and the second electrode; and an electron transport layer (ETL) located between the first electrode and the EML. The ETL includes a first surface proximate to the EML and a second surface proximate to the first electrode, oxygen vacancies is formed in the ETL, and a concentration of oxygen vacancies in the ETL gradually increases from the second surface to the first surface.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: April 23, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Wenhai Mei, Yichi Zhang
  • Patent number: 11967276
    Abstract: A display device includes: a display panel including a first pixel, a second pixel adjacent to one side of the first pixel, and a third pixel adjacent to the other side of the first pixel; a first scan driver supplying a first signal to the first to third pixels through a first scan line; a second scan driver supplying a second scan signal to the second and third pixels through a second scan line when a first time elapses after the supply of the first scan signal is started; a data driver supplying a data voltage to a plurality of output lines; and a data divider selectively supplying the data voltage to data lines respectively coupled to the first to third pixels. Each of the second and third pixels includes a switching transistor controlled by the second scan signal.
    Type: Grant
    Filed: April 7, 2021
    Date of Patent: April 23, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young In Hwang, Elly Gil, Jin A Lee, Joo Hyeon Jo, Seong Baik Chu
  • Patent number: 11963410
    Abstract: A display device includes a substrate including a pixel region and a peripheral region. A plurality of pixels is disposed in the pixel region of the substrate. Each of the plurality of pixels includes a light emitting element. Data lines and scan lines are connected to each of the plurality of pixels. A power line is configured to supply power to the plurality of pixels. The power line includes a plurality of first conductive lines and a plurality of second conductive lines intersecting the plurality of first conductive lines. The plurality of second conductive lines is arranged in a region between adjacent light emitting elements of the plurality of pixels. At least some of the plurality of second conductive lines extend in a direction oblique to a direction of extension of the data lines or the scan lines.
    Type: Grant
    Filed: June 13, 2022
    Date of Patent: April 16, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yang Wan Kim, Byung Sun Kim, Jae Yong Lee, Chung Yi, Hyung Jun Park, Su Jin Lee
  • Patent number: 11957044
    Abstract: An organometallic compound represented by Formula 1: wherein, in Formula 1, groups and variables are the same as described in the specification.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: April 9, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jongwon Choi, Sukekazu Aratani, Kum Hee Lee, Banglin Lee, Hyeonho Choi, Seungyeon Kwak, Yoonhyun Kwak, Sangdong Kim, Jiwhan Kim, Chul Baik, Yongsuk Cho
  • Patent number: 11955068
    Abstract: Embodiments of the present disclosure provide a gamma standard voltage generating circuit, a gamma driving voltage generating circuit and a display device. The gamma standard voltage generating circuit includes: a constant voltage element for outputting a constant voltage; a following voltage element coupled to a driving voltage terminal, for outputting a following voltage changing with a driving voltage of the driving voltage terminal; a selecting element electrically coupled to the constant voltage element and the following voltage element, for outputting the following voltage 10 or the constant voltage as an output voltage; a comparison element electrically coupled to the selecting element, for controlling the selecting element to output the following voltage when the output voltage meets a preset standard, and controlling the selecting element to output the constant voltage when the output voltage does not meet the preset standard; the constant voltage does not meet the preset standard.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: April 9, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Baoyun Wu, Zebang Guo, Hui Zhao
  • Patent number: 11956993
    Abstract: An organic light emitting display device and a method for manufacturing the same are disclosed. The organic light emitting display device includes a substrate divided into an emission area and a non-emission area, an overcoat layer disposed on the substrate and including a plurality of micro lenses in the emission area, a first electrode disposed on the overcoat layer and disposed in the emission area, an organic emission layer disposed on the substrate and having at least one layer which is flatly formed in the emission area, and a second electrode disposed on the organic emission layer.
    Type: Grant
    Filed: August 10, 2021
    Date of Patent: April 9, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: SeungRyong Joung, KangJu Lee, Hansun Park, Seongsu Jeon, Wonhoe Koo
  • Patent number: 11957050
    Abstract: A compound of Formula I wherein Y is selected from the group consisting of NAr, O, S, and Se; Ar is an optionally substituted aryl or optionally substituted heteroaryl; and Z1 to Z8 are independently selected from C or N, wherein at least one of Z2 or Z3 is C, and at least one of Z6 or Z7 is C. R is selected from the group consisting of deuterium, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, aryl, heteroaryl, nitrile, isonitrile, sulfanyl, and combinations thereof; or optionally R can join with Ar to from a ring; and with the provisios that R is not N-methyl-benzimidazole, and the compound is not compound A.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: April 9, 2024
    Inventors: Suman Layek, Jerald Feldman, Peter Wolohan, Tongxiang Lu
  • Patent number: 11952390
    Abstract: Provided are a phosphorescent organometallic complex and a use thereof. The metal complex has a ligand with a structure represented by Formula 1 and may be used as a light-emitting material in an electroluminescent device. These novel metal complexes can not only maintain low voltage and improve device efficiency in electroluminescent devices but also greatly reduce the half-peak width of light emitted by these devices so as to greatly improve color saturation of the light emitted by these devices, thereby providing better device performance. Further provided are an electroluminescent device and a compound formulation.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: April 9, 2024
    Assignee: Beijing Summer Sprout Technology Co., Ltd.
    Inventors: Wei Cai, Ming Sang, Chi Yuen Raymond Kwong, Chuanjun Xia, Zhen Wang, Tao Wang, Hongbo Li
  • Patent number: 11947224
    Abstract: A display panel is provided. The display panel includes a display region and a non-display region surrounding a periphery of the display region. The non-display region includes a multiple corner regions and multiple linear regions. The display panel further includes a first substrate, a second substrate, a liquid crystal layer, and a bezel assembly. The bezel assembly includes multiple support members and multiple sealant. At least one of the multiple support members is disposed in the corner region and the sealant is disposed in the linear region. The support member and the sealant bonds the first substrate and the second substrate. Two opposite ends of the sealant are respectively connected with one of the support members in two corner regions, and the liquid crystal layer is sealed between the first substrate and the second substrate. A display device having the display panel is also provided.
    Type: Grant
    Filed: June 14, 2023
    Date of Patent: April 2, 2024
    Assignee: HKC CORPORATION LIMITED
    Inventors: Jianying Zhang, Baohong Kang
  • Patent number: 11950442
    Abstract: The present disclosure provides an array substrate and a manufacturing method thereof, a display panel, and an electronic apparatus. The array substrate includes: a base substrate; a light emitting layer on the base substrate; and a first electrode on a side of the light emitting layer away from the base substrate. The array substrate includes a light emitting area and a non-light emitting area, the first electrode is in the light emitting area and the non-light emitting area, and a thickness of a portion of the first electrode in the light emitting area is less than a thickness of a portion of the first electrode in the non-light emitting area.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: April 2, 2024
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Haigang Qing
  • Patent number: 11950440
    Abstract: An organic light emitting device comprising an anode, a hole transport layer, a light emitting layer including a host and a dopant, and a cathode, where a difference between a dipole moment value of a compound included in the hole transport layer and a dipole moment value of the host is 1.0 to 2.0, and the organic light emitting device having low driving voltage, high emission efficiency and long lifetime characteristics.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: April 2, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Jaegoo Lee, Dongkeun Song, Jiyoung Noh, Yongbum Cha, Woochul Lee
  • Patent number: 11943973
    Abstract: Disclosed are a preparation method of a display panel, a display panel and a displaying device. The display panel comprises a plurality of first-color subpixels, and each first-color subpixel comprises a base, the base comprising a first driving electrode and a second driving electrode; a flat layer disposed on the side, near the first driving electrode and the second driving electrode, of the base; a patterned passivation layer and at least one first electrode disposed on the side, away from the base, of the flat layer, the first electrode being connected with the first driving electrode through via holes penetrating the flat layer; and at least one second electrode disposed on the side, away from the base, of the passivation layer, the second electrode being connected with the second driving electrode through via holes penetrating the passivation layer and the flat layer.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: March 26, 2024
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Yongfeng Zhang, Xue Dong, Zhiqiang Jiao, Lei Zhao, Jiushi Wang
  • Patent number: 11943965
    Abstract: A display device, includes: a substrate; a first thin film transistor and a second thin film transistor disposed on the substrate; a via insulating layer disposed on the substrate, wherein the via insulating layer includes a first contact hole and a second contact hole, wherein the first contact hole exposes a portion of the first thin film transistor, and the second contact hole exposes a portion of the second thin film transistor; a first pixel structure disposed on the via insulating layer, wherein the first pixel structure overlaps the first thin film transistor, and includes a first lower electrode; and a second pixel structure spaced apart from the first pixel structure, wherein the second pixel structure overlaps the second thin film transistor, and includes a second lower electrode having a shape different from a shape of the first lower electrode.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: March 26, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hyeonbum Lee
  • Patent number: 11944004
    Abstract: According to the present invention, there is provided an organic electroluminescence element including at least an anode, a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and a cathode in the stated order, the organic electroluminescence element being characterized in that: the hole injection layer contains an arylamine compound represented by the following general formula (1) and an electron acceptor. The organic EL element of the present invention has a high light emission efficiency and an excellent durability, as compared with the related art, while maintaining the existing low drive voltage.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: March 26, 2024
    Assignee: HODOGAYA CHEMICAL CO., LTD.
    Inventors: Norimasa Yokoyama, Shuichi Hayashi, Naoaki Kabasawa, Takeshi Yamamoto
  • Patent number: 11943944
    Abstract: A novel light-emitting device is provided. Alternatively, a light-emitting device having a long driving lifetime at high temperature is provided. The light-emitting device includes an anode, a cathode, and an EL layer positioned between the anode and the cathode. The EL layer includes a first layer, a second layer, a third layer, and a light-emitting layer in this order from the anode side. The first layer includes a first organic compound and a second organic compound. The second layer includes a third organic compound. The third layer includes a fourth organic compound. The light-emitting layer includes a fifth organic compound and an emission center substance. The first organic compound exhibits an electron-accepting property with respect to the second organic compound. A difference between HOMO levels of the fourth organic compound and the fifth organic compound is less than or equal to 0.24 eV.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: March 26, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yusuke Takita, Tsunenori Suzuki, Naoaki Hashimoto, Takumu Okuyama, Satoshi Seo
  • Patent number: 11937346
    Abstract: A first side surface (312) is positioned at a light emitting region (142) side. The first side surface (312) is inclined toward the light emitting region (142) with distance from the first surface (102) of the substrate (100). A second side surface (314) is positioned opposite to the first side surface (312). The second side surface (314) is inclined away from the light emitting region (142) with distance from the first surface (102) of the substrate (100). A first upper surface (316) is positioned between the first side surface (312) and the second side surface (314), and is substantially parallel to the first surface (102) of the substrate (100).
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: March 19, 2024
    Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATION
    Inventor: Shinji Nakajima
  • Patent number: 11937500
    Abstract: An organic light emitting device including a first electrode, a second electrode facing the first electrode, an emission layer between the first electrode and the second electrode, a hole transport region between the first electrode and the emission layer, and an electron transport region between the emission layer and the second electrode, wherein the electron transport region may include a first compound represented by one selected from Formulae 1A to 1E, and at least one selected from the hole transport region and the electron transport region may include a second compound represented by Formula 2A or 2B:
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: March 19, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Younsun Kim, Seulong Kim, Dongwoo Shin, Jungsub Lee, Naoyuki Ito, Jino Lim, Hyein Jeong
  • Patent number: 11937501
    Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; an organic layer disposed between the first electrode and the second electrode and including an emission layer; and at least one of heterocyclic compounds represented by Formulae 1-1 to 1-3, as defined herein.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: March 19, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hyejeong Park
  • Patent number: 11930673
    Abstract: A display panel includes a drive backplane, a transparent insulating layer and a light-emitting device layer. The drive backplane includes a driving circuit layer, a metal wiring layer, a first insulating layer and a reflective electrode layer. The first insulating layer has first via holes filled with first metal connectors. The reflective electrode layer includes first reflective electrodes respectively connected with the metal wiring layer through the first metal connectors. The light-emitting device layer includes a pixel electrode layer, an organic light-emitting layer and a common electrode layer. The pixel electrode layer includes first pixel electrodes respectively connected with the first reflective electrodes through the connection via holes. A distance between an orthographic projection of the connection via hole on the pixel electrode layer and an edge of the first pixel electrode is not less than a first threshold value.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: March 12, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhijian Zhu, Yu Ao, Yunlong Li, Pengcheng Lu, Yuanlan Tian
  • Patent number: 11925043
    Abstract: A quantum dot light-emitting device including first electrode and a second electrode, a quantum dot layer between the first electrode and the second electrode, a first electron transport layer and a second electron layer disposed between the quantum dot layer and the second electrode. The second electron transport layer is disposed between the quantum dot layer and the first electron transport layer, wherein each of the first electron transport layer and the second electron transport layer includes an inorganic material. A lowest unoccupied molecular orbital energy level of the second electron transport layer is shallower than a lowest unoccupied molecular orbital energy level of the first electron transport layer, and a lowest unoccupied molecular orbital energy level of the quantum dot layer is shallower than a lowest unoccupied molecular orbital energy level of the second electron transport layer. An electronic device including the quantum dot light-emitting device.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: March 5, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Moon Gyu Han, Heejae Lee, Eun Joo Jang, Tae Ho Kim, Kun Su Park, Won Sik Yoon, Hyo Sook Jang
  • Patent number: 11925051
    Abstract: A display device includes: a first base having a display area; light-emitting elements on the first base; and an encapsulation layer over the light-emitting elements. The encapsulation layer includes: a first inorganic layer; an organic layer on the first inorganic layer; and a second inorganic layer on the organic layer. The first inorganic layer includes: a first buffer layer on the light-emitting elements; a first barrier layer on the first buffer layer; a first porous layer on the first barrier layer; a second barrier layer on the first porous layer; and a second buffer layer on the second barrier layer. A refractive index of the first buffer layer, the first barrier layer, and the first porous layer are different from one another, and the refractive index of the first porous layer is smaller than the refractive index of the first buffer layer and the first barrier layer.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: March 5, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong Tack Kim, Eung Seok Park, Jae Hyuk Lee, Yoon Hyeung Cho, Dong Uk Choi
  • Patent number: 11925102
    Abstract: Novel ligands for metal complexes containing five-membered ring fused on pyrimidine ring combined with partially fluorinated side chains exhibiting improved external quantum efficiency and lifetime are disclosed.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: March 5, 2024
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Pierre-Luc T. Boudreault, Chuanjun Xia
  • Patent number: 11917867
    Abstract: Provided are a display panel and a method for manufacturing the same, a display device and a control method of the same related to the technical field of display. The display panel includes a base substrate; a pixel defining layer arranged on the base substrate and configured to define a plurality of sub-pixels, at least one sub-pixel of the plurality of sub-pixels includes a plurality of sub-pixel-units; and each sub-pixel-unit of the plurality of sub-pixels includes an anode, a light emitting layer, and a cathode that are stacked, and anodes of adjacent sub-pixel-units in a same sub-pixel are insulated from each other and are apart from the base substrate for different distances.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: February 27, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yanliu Sun, Yujie Liu, Ge Shi, Zheng Fang, Jiahui Han, Yuyao Wang, Song Yang, Shiyu Zhang
  • Patent number: 11917775
    Abstract: A foldable display device and a flexible display assembly are provided. The foldable display device includes a casing frame, a flexible display module arranged on the casing frame, and a pull-back device; the casing frame includes a first frame body and a second frame body hinged with the first frame body, and a hinged portion between the first and second frame bodies corresponds to a bending area of the flexible display module; a support plate is arranged on one side of the flexible display module facing away from a display side, the support plate is arranged close to a first end of the flexible display module and is slidably connected to the second frame body, and a portion of the flexible display module close to a second end is fixed on the first frame body; the pull-back device is arranged between the support plate and the second frame body.
    Type: Grant
    Filed: November 17, 2020
    Date of Patent: February 27, 2024
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Jiaxiang Wang, Yonghui Luo, Binfeng Feng, Zijie Zhang, Fei Li, Bowen Xiao
  • Patent number: 11910626
    Abstract: A light-emitting device includes: a substrate including a first subpixel, as second subpixel, and a third subpixel; a plurality of first electrodes respectively in the first subpixel, the second subpixel, and the third subpixel of the substrate; a second electrode facing the first electrode; an emission layer located between the plurality of first electrodes and the second electrode; a hole injection layer between the plurality of first electrodes and the emission layer; a first common layer between the hole injection layer and the emission layer, the first common layer integrated with the first subpixel, the second subpixel, and the third subpixel; a second common layer between the hole injection layer and the first common layer, the second common layer integrated with the first subpixel, the second subpixel, and the third subpixel, wherein the first common layer and the second common layer satisfy certain conditions.
    Type: Grant
    Filed: September 26, 2020
    Date of Patent: February 20, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyomin Kim, Illsoo Park, Sijin Sung, Gina Yoo, Sunhwa Kim, Jaehong Kim, Heeseong Jeong, Jongseok Han
  • Patent number: 11910653
    Abstract: A light-emitting device and a method of manufacturing the same. The light-emitting device includes a body portion, and a light-emitting portion arranged in the body portion and configured to emit light to the outside. The light-emitting portion includes a plurality of pixels. At least two of the pixels are configured to emit pieces of light having different wavelengths from each other.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: February 20, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyungjun Lee, Hwajung Lee, Sanghyun Yoon
  • Patent number: 11903288
    Abstract: An organic light-emitting device and display apparatus, the device including a first electrode; a second electrode facing the first electrode; an emission layer between the first and second electrode; a hole control layer between the first electrode and the emission layer; and an electron control layer between the emission layer and the second electrode, wherein the emission layer includes a plurality of sub-emission layers to emit light having different wavelengths, at least portions of the plurality of sub-emission layers do not overlap one another, the plurality of sub-emission layers include: a first sub-emission layer including a first color light-emitting dopant, and a second sub-emission layer including a second color light-emitting dopant, the first and second sub-emission layers each include a hole-transporting and electron-transporting host which form an exciplex, and a triplet energy of the exciplex is equal to or greater than triplet energies of the first and second color light-emitting dopant.
    Type: Grant
    Filed: January 13, 2023
    Date of Patent: February 13, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hajin Song, Jihwan Yoon, Sangwoo Lee, Sangwoo Pyo
  • Patent number: 11899051
    Abstract: In a general aspect, a vapor cell includes a body defined by a stack of layers that includes electrically conductive layers and electrically insulating layers. The stack of layers are bonded to each other and have first and second end layers at respective opposite ends of the body. The stack of layers also has intermediate layers between the first and second end layers that define an internal cavity of the body. The internal cavity extends through the body between the first and second end layers and includes a vapor or a source of the vapor disposed therein. Adjacent electrically conductive layers are separated by at least one electrically insulating layer. Moreover, each electrically conductive layer defines an electrode of the vapor cell and includes a contact surface on an exterior side of the body. The contact surface defines an electrical contact of the electrode.
    Type: Grant
    Filed: September 13, 2022
    Date of Patent: February 13, 2024
    Assignee: Quantum Valley Ideas Laboratories
    Inventors: Rajesh Pandiyan, Donald Booth, Harald K├╝bler, Somayeh M. A. Mirzaee, Hadi Amarloo, Sanyasi Bobbara, James P. Shaffer
  • Patent number: 11903242
    Abstract: A display apparatus includes: a substrate including a display area and a peripheral area around the display area, the substrate having a bent portion; a plurality of display elements in the display area; and a thin film encapsulation layer over the plurality of display elements and including a first encapsulation layer, a second encapsulation layer over the first encapsulation layer, and an organic encapsulation layer between the first encapsulation layer and the second encapsulation layer, wherein the second encapsulation layer includes a plurality of inorganic thin layers and a plurality of organic thin layers alternately arranged, and a thickness of the second encapsulation layer is equal to or less than a thickness of the first encapsulation layer.
    Type: Grant
    Filed: November 29, 2022
    Date of Patent: February 13, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sunhee Lee, Sunho Kim, Gunhee Kim, Donghwan Shim, Taehoon Yang