Multi-color Emission Patents (Class 257/89)
  • Patent number: 11121172
    Abstract: A light-emitting diode unit for a display including a plurality of pixels each including: first, second, and third light-emitting cells respectively including a first conductive semiconductor layer, an active layer, and a second conductive semiconductor layer; pads electrically connected to the first through third light-emitting cells to independently drive the first through third light-emitting cells; a first wavelength converter for converting a wavelength of light emitted from the first light-emitting cell; and a second wavelength converter for converting a wavelength of light emitted from the second light-emitting cell, in which the first wavelength converter converts a wavelength of light to a longer wavelength than the second wavelength converter, the second light-emitting cell has a greater area than the third light-emitting cell, and the first light-emitting cell has a greater area than the second light-emitting cell.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: September 14, 2021
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Chung Hoon Lee, Jong Hyeon Chae
  • Patent number: 11121339
    Abstract: Embodiments of the present application relate to illumination devices using luminescent nanostructures. An illumination device includes a first conductive layer, a second conductive layer, a hole transport layer, an electron transport layer and a material layer that includes a plurality of luminescent nanostructures. The hole transport layer and the electron transport layer are each disposed between the first conductive layer and the second conductive layer. The material layer is disposed between the hole transport layer and the electron transport layer and includes one or more discontinuities in its thickness such that the hole transport layer and the electron transport layer contact each other at the one or more discontinuities. Resonant energy transfer occurs between the luminescent nanostructures and excitons at the discontinuities.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: September 14, 2021
    Assignee: Nanosys, Inc.
    Inventors: Emma Rose Dohner, Yeewah Annie Chow, Wenzhuo Guo, Christian Justus Ippen, Jason Travis Tillman, Jonathan Andrew Truskier
  • Patent number: 11114637
    Abstract: The present disclosure provides a current-driven display, including a substrate and a first electrode layer stacked on the substrate in a stacking direction. The substrate includes a plurality of light-emitting units and a spacer separating each of the plurality of light-emitting units from one another. The first electrode layer includes a first region and a second region. The first region and the second region contact one of the plurality of light-emitting units, respectively, and are separated by the spacer. The current-driven display further includes a second electrode layer, which equipotentially connects the first region and the second region across the spacer. The present disclosure also provides a method for producing a current-driven display.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: September 7, 2021
    Assignee: INT TECH CO., LTD.
    Inventor: Shin-Shian Lee
  • Patent number: 11106098
    Abstract: A pixel arrangement structure, a display substrate, a display device, and a mask are provided. The pixel arrangement structure includes: a first repeating unit and a second repeating unit. The first repeating unit includes a first sub-pixel, a second sub-pixel, and two third sub-pixels, and the second repeating unit includes two fourth sub-pixels, a fifth sub-pixel, and a sixth sub-pixel. In a first direction, the two third sub-pixels are between the first sub-pixel and the second sub-pixel, and the two fourth sub-pixels are between the fifth sub-pixel and the sixth sub-pixel. The two fourth sub-pixels are arranged along the first direction, the two third sub-pixels are arranged along a second direction, and the first direction and the second direction are not parallel to each other.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: August 31, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Hui Zhao, Jing Yu, Lujiang Huangfu, Wenjing Tan
  • Patent number: 11094766
    Abstract: An array substrate, a display panel and a display device are provided. The array substrate includes a plurality of pixel units, wherein each pixel unit includes a storage capacitor including at least three electrode plates parallel to each other, the at least three electrode plates parallel to each other include a first electrode plate, a second electrode plate and a third electrode plate, the first electrode plate is electrically connected to the second electrode plate, the third electrode plate is disposed between the first electrode plate and the second electrode plate, and the first electrode plate and the second electrode plate each have a portion facing towards the third electrode plate.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: August 17, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Hongfei Cheng, Yuxin Zhang, Xueguang Hao, Yongda Ma, Yongchun Lu, Hui Li
  • Patent number: 11094676
    Abstract: A light-emitting device includes: a first light source including a first light-emitting element having a peak emission wavelength in a range of 430 nm to 480 nm; a second light source including a second light-emitting element having a peak emission wavelength in a range of 430 nm to 480 nm; a third light source; and an encapsulant containing a phosphor. In a 1931 CIE chromaticity diagram, the light-emitting device has: a first chromaticity point when only the first light source is operated, a second chromaticity point different from the first chromaticity point when only the second light source is operated, and a third chromaticity point when only the third light source is operated, the third chromaticity point having a y-value larger than a y-value on a straight line passing the first chromaticity point and the second chromaticity point.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: August 17, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Hiroaki Ukawa, Atsushi Bando
  • Patent number: 11087671
    Abstract: A pixel structure includes a data line, a first scan line, first and second transistors, first and second power lines, LED elements, a connection pattern, a first insulation layer, and a first conductive pattern. Each of the first transistor and the second transistor has a first end, a control end, and second end. Each LED element has a first electrode and a second electrode. The second power line is electrically coupled to the first electrodes. The connection pattern is electrically coupled between the second end of the first transistor and the control end of the second transistor. The first conductive pattern is disposed above the first insulation layer and electrically coupled between the second electrodes, the second electrodes are electrically coupled to the second end of the second transistor through the first conductive pattern, and the connection pattern and the first conductive pattern are overlapped in an orthogonal projection direction.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: August 10, 2021
    Assignee: Au Optronics Corporation
    Inventors: Bo-Shiang Tzeng, Chia-Ting Hsieh, Pin-Miao Liu, Shih-Hsing Hung
  • Patent number: 11067879
    Abstract: A small projector uses an ultra-dense array of gallium nitride (GaN) LEDs. However, epitaxial growth of GaN typically produces a GaN region that is 5 um or thicker. To achieve high pixel density, the LEDs have small area, so the resulting LED structures are tall and skinny. This is undesirable because it makes further processing more difficult and has higher optical losses. As a result, it is beneficial to reduce the thickness of the GaN region. In one approach, a wafer with the GaN region on substrate is bonded to a backplane wafer containing LED driver circuits. The substrate is then separated from the GaN region, exposing a buffer layer of the GaN region. The GaN region is thinned and then patterned into individual LEDs. Typically, the buffer layer is removed entirely.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: July 20, 2021
    Assignee: Tectus Corporation
    Inventors: Kwong-Hin Henry Choy, Paul Scott Martin
  • Patent number: 11069669
    Abstract: A micro LED display panel includes a blue LED layer, a green LED layer, and a red LED layer. The blue LED layer, the green LED layer, and the red LED layer are in a stacked formation. The blue, the green, and the red LED layers each include a plurality of micro LEDs spaced apart from each other. The composition of the layers is such that light emitted from all but the bottom layer is able to pass through transparent material in other layers before exiting the panel and being viewed.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: July 20, 2021
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Wei-Chih Chang, Chung-Wen Lai
  • Patent number: 11066510
    Abstract: The present invention provides an epoxy resin composition that can produce a cured product maintaining good dielectric characteristics (low dielectric constant and low dielectric loss tangent), and having high adhesion strength to metal; and also provides a process for producing the same, a cured product obtained by curing the epoxy resin composition, and use thereof. The present invention includes an epoxy resin composition comprising an epoxy resin, an acid anhydride-based curing agent, and a curing accelerator, the epoxy resin being represented by the formula (1): wherein X is a divalent group obtained by removing two hydrogen atoms from a hydrocarbon ring, or a divalent group represented by the formula (2): wherein Y is a bond, a C1-6 alkylene group, etc.; R1 is the same or different, and is a C1-18 alkyl group, etc., R2 is the same or different, and is a C1-18 alkylene group, etc., R3 is the same or different, and is a C1-18 alkyl group, etc.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: July 20, 2021
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Noriaki Fukuda, Ryota Harisaki, Katsumasa Yamamoto, Nobukatsu Nemoto
  • Patent number: 11060689
    Abstract: A light-emitting device includes an emission array including a plurality of light-emitting elements and a partition wall. The emission array includes a first region and a second region adjacent to each other. The partition wall is configured to isolate the first region and the second region from each other, such that the partition wall at least partially defines the first region in the emission array. The first region is associated with a first emission factor and the second region is associated with a second emission factor, the second emission factor different from the first emission factor.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: July 13, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-min Kwon, Pun-jae Choi, Geun-woo Ko, Jong-hyun Lee
  • Patent number: 11054112
    Abstract: A device including a phosphor layer having a plurality of air gaps arranged within the phosphor layer to block lateral light transmission. The phosphor layer can be sized and positioned to be continuously extend over a plurality of LED emitter pixels.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: July 6, 2021
    Assignee: Lumileds LLC
    Inventors: Kentaro Shimizu, Venkata Ananth Tamma, Hisashi Masui
  • Patent number: 11050008
    Abstract: A display apparatus and a method of manufacturing the same are disclosed. The display apparatus includes at least one light emitting diode chip, a conductive portion disposed under the light emitting diode chip and coupled to the light emitting diode chip, and an insulating material surrounding the conductive portion. The conductive portion includes a first conductive portion and a second conductive portion, and the insulating material is formed to expose at least a portion of the upper surfaces of the first conductive portion and the second conductive portion.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: June 29, 2021
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Motonobu Takeya, Jong Ik Lee
  • Patent number: 11049908
    Abstract: A multicolor light-emitting element that utilizes fluorescence and phosphorescence and is advantageous for practical application is provided. The light-emitting element has a stacked-layer structure of a first light-emitting layer containing a host material and a fluorescent substance and a second light-emitting layer containing two kinds of organic compounds and a substance that can convert triplet excitation energy into luminescence. Note that light emitted from the first light-emitting layer has an emission peak on the shorter wavelength side than light emitted from the second light-emitting layer.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: June 29, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takahiro Ishisone, Satoshi Seo, Yusuke Nonaka, Nobuharu Ohsawa
  • Patent number: 11043621
    Abstract: A light emitting device includes: a light emitting element; a first reflecting member containing reflecting particles, and covering the upper surface of a base while exposing a light extraction surface of the light emitting element; a first cover member having a lower concentration of reflecting particles than the first reflecting member and covering the first reflecting member and a portion of lateral surfaces of the light emitting element while exposing the light extraction surface of the light emitting element; a second cover member covering a portion of the lateral surfaces of the light emitting element; a second reflecting member surrounding the second cover member in a top view and contacting the second cover member and the first reflecting member; the second reflecting member having a narrow-width portion being in contact with the first reflecting member and a wide-width portion located above the narrow-width portion in a cross-sectional view.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: June 22, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Masato Aihara, Kenji Ozeki, Atsushi Kojima, Chinami Nakai, Kazuya Tamura
  • Patent number: 11041597
    Abstract: The present invention provides an LED module that can prevent breakage of an LED chip due to pulse lighting for a flash when the LED module is used in a flashing lamp. An LED module (10) for flashing lamp includes: an LED substrate (13); plural LEDs (12); and plural resin layers (11). In the LED module (10), the LEDs (12) are mounted on a mounting surface of the LED substrate (13). Each resin layer (11) is stacked on a surface of each LED (12) opposite to the LED substrate (13). Adjacent resin layers (11) stacked on the LEDs (12) are separated from each other.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: June 22, 2021
    Assignee: HotaluX, Ltd.
    Inventor: Norimasa Mizobe
  • Patent number: 11037980
    Abstract: In a pixel, at least two sets of a pair of wiring lines, that is connected to a pair of electrodes of a micro-LED and is coupled to a pixel circuit, are disposed, the pixel circuit has a first LED drive circuit that supplies a current to the micro-LED and a second LED drive circuit that substitutes for the first LED drive circuit, and the pixel circuit also has a switching device that short-circuits the pair of wiring lines.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: June 15, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Katsuji Iguchi
  • Patent number: 11038084
    Abstract: A light-emitting device includes a first light-emitting element, a second light-emitting element having a peak emission wavelength different from that of the first light-emitting element, a light-guide member covering a light extracting surface and lateral surfaces of the first light-emitting element and a light extracting surface and lateral surfaces of the second light-emitting element, and a wavelength conversion layer continuously covering the light extracting surface of each of the first and second light-emitting elements and disposed apart from each of the first and second light-emitting elements, and a first reflective member covering outer lateral surfaces of the light-guide member. An angle defined by an active layer of the first light-emitting element and an active layer of the second light-emitting element is less than 180° at a wavelength conversion layer side.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: June 15, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Toru Hashimoto, Takuya Nakabayashi
  • Patent number: 11036124
    Abstract: A system for projecting images, configured to implement a sequential type colour projection. The system includes an emissive matrix display device; and a wavelength conversion coloration wheel. The coloration wheel includes a transparent zone, and a first photoluminescent zone configured to absorb a blue light beam and to emit in response a beam including a green component and a red component. The system further includes a selection device for blocking alternately the green component or the red component, including at least one dichroic mirror.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: June 15, 2021
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, THALES
    Inventors: Francois Templier, Francois-Henri Luc
  • Patent number: 11024824
    Abstract: The application discloses an organic electroluminescent device. The organic electroluminescent device includes: a substrate; and an organic luminescent layer including an array of pixel points which include a first electrode, and the first electrode of the pixel points laps with a Vss lead. A length of the first electrode lapping with the Vss lead increases from a starting end of the Vss lead toward a terminating end of the Vss lead.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: June 1, 2021
    Assignee: KunShan Go-Visionox Opto-Electronics Co., Ltd.
    Inventors: Zhaoli Chen, Jinfang Zhang
  • Patent number: 11025895
    Abstract: The present disclosure relates to a directional pixel for a high-angular resolution, wide field of view, multiple view display. The design teaches a directional pixel comprising a substrate, one or more pixel driving circuits, one or more nano- or micro-scale subpixels, and one or more directional optical guiding surfaces, wherein each of said one or more subpixels is comprised of a light emitting device emitting a light beam and an optical microcavity housing said light emitting device. The optical microcavity is comprised of a plurality of reflective surfaces to specifically manipulate and tune said light beam, wherein one or more of said reflective surfaces is a light propagating reflective surface which propagates said light beam out of said microcavity, and said light propagating reflective surface is connected to said one or more directional optical guiding surfaces to direct said light beam at a specific angle.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: June 1, 2021
    Inventors: Wally Haas, Jennifer Campbell-Correa, Matthew Hamilton, Stephen Hill, Jordan Peckham, Chuck Rumbolt
  • Patent number: 11024613
    Abstract: Lumiphoric material region arrangements are provided for light-emitting diode (LED) packages. Certain aspects relate to arrangements of light-altering materials and lumiphoric material regions for LED packages. Lumiphoric material regions over corresponding LED chips may include increased sizes relative to overall LED package dimensions. Lumiphoric material regions may be arranged to extend to certain peripheral edges of an LED package. Multiple lumiphoric material regions and corresponding LED chips may be arranged in close proximity to one another to provide LED packages with multiple and selectable illumination characteristics. Light-altering materials may be arranged that at least partially define certain peripheral edges of lumiphoric material regions. The light-altering materials may form one or more nonintersecting segments arranged about the lumiphoric material regions. Certain aspects relate to LED packages having one or more of reduced sizes, increased light output, and reduced fabrication steps.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: June 1, 2021
    Assignee: CreeLED, Inc.
    Inventors: David Suich, Arthur F. Pun, Colin Blakely
  • Patent number: 11024584
    Abstract: An electronic device stretchable from a first state to a second state includes a substrate, a plurality of light emitting groups, and a plurality of signal pads. The substrate has a first region and a second region. The light emitting groups are disposed on the first region. The signal pads are disposed on the second region. When the electronic device is stretched from the first state to the second state, the first region has a first stretching ratio (R1) and the second region has a second stretching ratio (R2), and R1 is greater than R2.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: June 1, 2021
    Assignee: InnoLux Corporation
    Inventors: Yuan-Lin Wu, Kuan-Feng Lee
  • Patent number: 11018182
    Abstract: A pixel structure includes a light emitting diode chip and a light blocking structure. The light emitting diode chip includes a P-type semiconductor layer, an active layer, an N-type semiconductor layer, a first electrode, and K second electrodes. The active layer is located on the P-type semiconductor layer. The N-type semiconductor layer is located on the active layer. The N-type semiconductor layer has a first top surface that is distant from the active layer. The first electrode is electrically connected to the P-type semiconductor layer. The light blocking structure is located in the light emitting diode chip and defines K sub-pixel regions. The active layer and the N-type semiconductor layer are divided into K sub-portions respectively corresponding to the K sub-pixel regions by the light blocking structure. The K sub-pixel regions share the P-type semiconductor layer.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: May 25, 2021
    Assignee: Lextar Electronics Corporation
    Inventors: Yi-Jyun Chen, Li-Cheng Yang, Yu-Chun Lee, Shiou-Yi Kuo, Chih-Hao Lin
  • Patent number: 11011597
    Abstract: A display device includes scan lines for scan signals, data lines for data voltages, and pixels connected to the scan and data lines, where each of the pixels includes a first transistor configured to control a driving current which flows from a first electrode to a second electrode according to a voltage applied to a gate electrode, a light-emitting element connected to the second electrode and configured to emit light according to the driving current, and a third transistor electrically connected between the gate electrode and the second electrode, the third transistor includes an active layer including a first region connected to the second electrode of the first transistor, a second region connected to the gate electrode of the first transistor, and a channel region between the first region and the second region, and electrical resistance of the second region is greater than electrical resistance of the first region.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: May 18, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Sub Kim, Mee Jae Kang, Han Bit Kim, Yong Su Lee
  • Patent number: 11004835
    Abstract: Light-emitting sub-pixels and pixels for micro-light-emitting diode-based displays are provided. Also provided are methods of fabricating individual sub-pixels, pixels, and arrays of the pixels. The sub-pixels include a double-layered film that includes a coupling layer disposed over a light-emitting diode and a light-emission layer disposed over the coupling layer.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: May 11, 2021
    Assignee: Kateeva, Inc.
    Inventor: Florian Pschenitzka
  • Patent number: 11005006
    Abstract: A light emitting diode including a first light emitting region, and a second light emitting region spaced apart from and surrounding the first light emitting region, in which the first light emitting region and the second light emitting region are configured to be independently operated.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: May 11, 2021
    Inventors: Bang Hyun Kim, Young Hye Seo, Jae Ho Lee, Jong Min Lee, Seoung Ho Jung, Eui Sung Jeong
  • Patent number: 10991854
    Abstract: A light-emitting element includes a semiconductor light-emitting stack including a first semiconductor layer, a second semiconductor layer formed on the first semiconductor layer, and an active layer formed therebetween; a first conductive layer disposed on the second semiconductor layer and electrically connecting the second semiconductor layer; a second conductive layer disposed on the second semiconductor layer and electrically connecting the first semiconductor layer; and a cushion part disposed on and directly contacts the first conductive layer, wherein in a top view, the cushion part is surrounded by and electrically isolated from the second conductive layer.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: April 27, 2021
    Assignee: EPISTAR CORPORATION
    Inventors: Chao-Hsing Chen, Tsung-Hsun Chiang, Chien-Chih Liao, Wen-Hung Chuang, Min-Yen Tsai, Bo-Jiun Hu
  • Patent number: 10978621
    Abstract: A light emitting element, used behind a display, comprises LED chips emitting blue light and separated red and green phosphor layers on the LED chip, the layers receiving the emitted blue light and respectively converting the same into precise colors for the display. A portion of the light directly from the LED chip is also combined with the converted light and passed on as lighting for the display. Partial absorption of green light by the red phosphor and red light by the green phosphor, occurring when the red and green phosphor layers are overlapped, is avoided. Light conversion efficiency of the green and red phosphor layers is thereby improved. A light emitting assembly, a display device, and a method for making the light emitting assembly are also disclosed.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: April 13, 2021
    Assignees: Interface Technology (ChengDu) Co., Ltd., INTERFACE OPTOELECTRONICS (SHENZHEN) CO., LTD., GENERAL INTERFACE SOLUTION LIMITED
    Inventors: Syun-Long Ye, Wen-Hsiao Huang, Ta-Jen Huang
  • Patent number: 10964674
    Abstract: A micro-LED display panel is disclosed. The micro-LED display panel includes: a plurality of unit substrates, each of which is formed with a plurality of electrode pads; a plurality of pixels, each of which includes a first micro-LED chip, a second micro-LED chip, and a third micro-LED chip mounted corresponding to the electrode pads; and a mesh arranged over the plurality of unit substrates. The mesh has pixel spacing portions covering at least some exposed areas of the plurality of unit substrates between the pixels and a plurality of openings accommodating the corresponding pixels. The micro-LED display panel is constructed such that the reflection of external light by the exposed areas of the substrate between the pixels and the exposed areas of the electrode pads disposed on the unit substrates is reduced. This construction improves the contrast characteristics and black characteristics of a display and achieves seamlessness in the micro-LED display panel.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: March 30, 2021
    Assignee: LUMENS CO., LTD.
    Inventors: Jeongho Bang, Juok Seo, Taekyung Yoo
  • Patent number: 10964679
    Abstract: A display apparatus includes: a display substrate; a light-emitting diode (“LED”) disposed on the display substrate and which emits light; a passivation layer disposed on the display substrate and surrounding the LED; a first conductive layer disposed on the LED and the passivation layer; and a capping layer disposed on the LED and which adjusts a proceeding path of light emitted from the LED, where the first conductive layer includes a first region which overlaps the capping layer and a second region which does not overlap the capping layer, and the first region and the second region of the first conductive layer have different light characteristics from each other.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: March 30, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Changyong Jeong
  • Patent number: 10957824
    Abstract: A light-emitting diode or device (LED) package includes a substrate, a white LED above the substrate, and a violet LED or laser above a wavelength converter of the white LED or laterally offset from the wavelength converter.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: March 23, 2021
    Assignee: Lumileds LLC
    Inventors: Hans-Helmut Bechtel, Erik Roeling
  • Patent number: 10959312
    Abstract: The present invention addresses an illumination system and an illumination method which make a space including a display item illuminated with VIVID lighting where Duv is greatly deviated negatively from zero not perceived as pale pinkish, and the issue is solved by an illumination system for illuminating a space where a display item is displayed, wherein the illumination system comprises a first light-emitting device mainly illuminating the display item and satisfying the predetermined conditions, and a second light-emitting device mainly illuminating a space other than the display item and satisfying the predetermined conditions.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: March 23, 2021
    Assignee: CITIZEN ELECTRONICS CO., LTD.
    Inventors: Koichi Fukasawa, Makoto Arai
  • Patent number: 10950584
    Abstract: A lighting apparatus a first group of at least one first solid state emitter, each first solid state emitter including a first light emitting diode (“LED”) that, when excited, emits light having a peak wavelength in a range between about 440 nm and about 475 nm, and a second group of at least one second solid state emitter, each second solid state emitter comprising a second LED that, when excited, emits light having a peak wavelength in a range between about 390 nm and about 415 nm. Between about 2% and about 15% of a spectral power of light emitted from the lighting apparatus is light having wavelengths in the range between about 390 nm and about 415 nm.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: March 16, 2021
    Assignee: Ideal Industries Lighting LLC
    Inventors: Nishant Tiwari, Al Safarikas, David Power
  • Patent number: 10944077
    Abstract: A process includes the following successive steps: a) providing a substrate including a structured first electrode; b) forming in succession first and second bilayer stacks on the structured first electrode, each bilayer stack including in succession first and second layers made of first and second materials that are transparent conductive oxides able to be selectively etched; c) etching the second bilayer stack in a zone intended to accommodate a blue subpixel and in a zone intended to accommodate a green subpixel; d) etching the first bilayer stack in the zone intended to accommodate the blue subpixel; e) forming a stack of organic light-emitting layers, the stack being configured to emit white light; f) forming a second electrode on the stack of organic light-emitting layers so as to obtain an optical resonator with the first electrode.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: March 9, 2021
    Assignee: Commissariat A L'Energie Atomique et aux Energies Alternatives
    Inventors: Laurent Mollard, Tony Maindron, Myriam Tournaire
  • Patent number: 10944029
    Abstract: A light emitting device includes: a base substrate; a plurality of unit regions provided on the base substrate; a barrier disposed at a boundary of the unit regions to surround each of the unit regions; a dam disposed in each of the unit regions to be spaced apart from the barrier; a first electrode provided in each of unit light emitting regions surrounded by the dam; a second electrode disposed in each of the unit light emitting regions, the second electrode of which at least one region is provided opposite to the first electrode; and one or more LEDs provided in each of the unit light emitting regions, the one or more LEDs being electrically connected between the first electrode and the second electrode.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: March 9, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Deok Im, Jong Hyuk Kang, Dae Hyun Kim, Joo Yeol Lee, Hyun Min Cho
  • Patent number: 10937768
    Abstract: A method of manufacturing a display apparatus according to an exemplary embodiment includes the steps of forming a plurality of light emitting diode chips on a first manufacturing substrate, coupling the plurality of the light emitting diode chips onto a second manufacturing substrate, separating the first manufacturing substrate from the plurality of the light emitting diode chips, and transferring the plurality of light emitting diode chips coupled onto the second manufacturing substrate to a substrate including first and second substrate electrodes.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: March 2, 2021
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventor: Motonobu Takeya
  • Patent number: 10937827
    Abstract: A pseudosubstrate for an optoelectronic device suitable for the growth of light-emitting diodes including a substrate and a buffer structure formed on an upper face of the substrate. The buffer structure includes at least one first portion wherein one layer made of solid gallium nitride (GaN) delimits at least one free surface of a first type facing away from the upper face of the substrate, each free surface of the first type being suitable for the growth on same of at least one light-emitting diode mostly based on a III-V compound capable of emitting light at a first wavelength.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: March 2, 2021
    Assignee: ALEDIA
    Inventors: Ivan-Christophe Robin, Jérôme Napierala
  • Patent number: 10936845
    Abstract: An OLED display panel and an under-screen optical fingerprint recognition method are provided. In the OLED display panel, light sensitive units for optical fingerprint recognition are assembled in an OLED module functional layer and located on a same film layer where an anode of an organic electroluminescence device is located on, and located at gaps between the anodes. Such a structure reduces a path for light propagation, increases intensity of light received by the light sensitive units, and improves accuracy and efficiency in fingerprint recognition.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: March 2, 2021
    Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Shang Zhou
  • Patent number: 10928853
    Abstract: A transparent display device having an optical transmissive region and a circuit layout region is provided. A light transmittance of the optical transmissive region is greater than that of the circuit layout region. The transparent display device includes a plurality of display elements and a driving circuit. The display elements are disposed in the optical transmissive region or the circuit layout region. The driving circuit is disposed in the circuit layout region and is electrically connected with the display elements. The transparent display device satisfies: 0.1<light spot spreading degree <1.1+0.78×exp (0.0072×resolution), and 10%<aperture ratio <90%.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: February 23, 2021
    Assignee: Industrial Technology Research Institute
    Inventors: Yu-Tang Tsai, Shin-Hong Kuo, Yu-Hsiang Tsai, Chih-Chia Chang, Hung-Chuan Liu
  • Patent number: 10925153
    Abstract: A printed circuit board includes first and second signal pads, and first, second, and third ground pads. The first and second signal pads and the first and second ground pads are arranged in a line with the first and second signal pads between the first and second ground pads. The third ground pad is arranged between the first and second signal pads but is not in line with the first and second signal pads.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: February 16, 2021
    Assignee: Dell Products, L.P.
    Inventors: Sandor Farkas, Bhyrav M. Mutnury
  • Patent number: 10910522
    Abstract: In various embodiments, lighting systems include a carrier having a plurality of conductive elements disposed thereon and a light-emitting array. The light-emitting array is disposed over the carrier and includes a plurality of light-emitting diodes (LEDs), each of which has at least two electrical contacts electrically connected to conductive elements.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: February 2, 2021
    Assignee: COOLEDGE LIGHTING INC.
    Inventors: Michael A. Tischler, Vladimir Odnoblyudov, David Keogh
  • Patent number: 10910353
    Abstract: A white light source includes an arrangement of light-emitting diodes, wherein the light-emitting diodes are subdivided into first light-emitting diodes and second light-emitting diodes, and a conversion element configured to absorb light emitted by the light-emitting diodes and generate converted light with a longer wavelength than the emitted light, wherein the conversion element includes a first luminescent conversion material in a first matrix material, the first matrix material with the first luminescent conversion material is arranged two-dimensionally in a continuous layer above the first and second light-emitting diodes, the conversion element includes a second luminescent conversion material in a second matrix material, and the second matrix material with the second luminescent conversion material is arranged only above the second light-emitting diodes.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: February 2, 2021
    Assignee: OSRAM OLED GmbH
    Inventors: Markus Burger, Désirée Queren
  • Patent number: 10896928
    Abstract: A LED display device is provided in the present disclosure, including multiple pixel units arranged in array on the substrate. Each of the pixel units includes three LEDs with different emitting colors. In each row of the pixel units, a first electrode of each LED is connected directly with a lateral through line. In each column of the pixel units, a second electrode of a red LED is electrically connected with a first vertical through line via a first via hole, a second electrode of a green LED is electrically connected with a second vertical through line via a second via hole, and a second electrode of a blue LED is electrically connected with a second vertical through line via a third via hole.
    Type: Grant
    Filed: December 22, 2018
    Date of Patent: January 19, 2021
    Assignee: XIAMEN XM-PLUS TECHNOLOGY LTD
    Inventor: Cheng-Hung Lin
  • Patent number: 10882221
    Abstract: This disclosure relates to a peeling method of a flexible substrate, and belongs to the technical field of flexible display. The method comprises the steps of: (a) forming a flexible substrate on a base substrate, wherein the flexible substrate has a plane area less than that of the base substrate; (b) adhering a protective film on the base substrate formed with the flexible substrate by an ultraviolet viscosity-reducing adhesive, wherein the plane area of the flexible substrate is less than that of the protective film, and the protective film is further adhered to the base substrate by the ultraviolet viscosity-reducing adhesive; (c) irradiating a region on the base substrate covered by the protective film through the base substrate with an ultraviolet light; and (d) peeling the protective film and the flexible substrate from the base substrate after the irradiation with an ultraviolet light is completed.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: January 5, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Ming Che Hsieh, Chunyan Xie, Lu Liu, Hejin Wang, Yuanzheng Guo
  • Patent number: 10886437
    Abstract: An inorganic coating may be applied to bond optically scattering particles or components. Optically scattering particles bonded via the inorganic coating may form a three dimensional film which can receive a light emission, convert, and emit the light emission with one or more changed properties. The inorganic coating may be deposited using a low-pressure deposition technique such as an atomic layer deposition (ALD) technique. Two or more components, such as an LED and a ceramic phosphor layer may be bonded together by depositing an inorganic coating using the ALD technique.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: January 5, 2021
    Assignee: Lumileds LLC
    Inventors: Michael Camras, Jyoti Bhardwaj, Peter J. Schmidt, Niels Jeroen Van Der Veen
  • Patent number: 10879438
    Abstract: According to one embodiment, a light emitting module includes a first insulating film having optical transparency, a second insulating film arranged facing the first insulating film and having optical transparency, a conductor layer formed on the first insulating film, and a plurality of light emitting elements arranged between the first insulating film and the second insulating film and connected to the conductor layer in a first surface on one side. Each of the plurality of light emitting elements including a first electrode in which a height from a second surface opposite to the first surface is a first height and a second electrode in which a height from the second surface is a second height. The plurality of light emitting elements are arranged such that a distance between the first electrodes of adjacent light emitting elements is smaller than a distance between the second electrodes.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: December 29, 2020
    Assignee: Toshiba Hokuto Electronics Corporation
    Inventor: Tsuyoshi Abe
  • Patent number: 10879327
    Abstract: An organic EL display panel includes a substrate, an interlayer insulation layer formed over the substrate, and an organic EL light emitting section formed over the interlayer insulation layer. The organic EL light emitting section includes a plurality of pixel electrodes arranged in a matrix pattern, a plurality of partition walls each of which is disposed between the pixel electrodes adjacent to each other in a row direction and extends in a column direction, an organic layer including a light emitting layer formed in a region partitioned by the partition walls, and a counter electrode formed on an upper side of the organic layer, and includes a first light emitting section for a first color and a second light emitting section for a second color. The first and second light emitting sections are different in thickness of the organic layer and in digging amount of the interlayer insulation layer in the region partitioned by the partition walls.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: December 29, 2020
    Assignee: JOLED INC.
    Inventors: Yasuhiro Tanaka, Noriteru Maeda, Kenichi Nendai, Masayuki Kubota
  • Patent number: 10874001
    Abstract: Disclosed is a color temperature variable light emitting diode module that is driven when alternating current power is applied thereto. The light emitting diode module includes: a substrate; and a plurality of light emitting diode groups arranged on a substrate and including a first light emitting diode group emitting light at an input voltage level equal to or above a first reference voltage and a second light emitting diode group emitting light at an input voltage level equal to or above a second reference voltage higher than the first reference voltage.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: December 22, 2020
    Assignee: LUMENS CO., LTD.
    Inventors: Jungwoo Lee, Junhyung Lim, Hyunpyo Hong, Jihye Chang
  • Patent number: 10873011
    Abstract: The invention describes a semiconductor die comprising at least a first light-emitting diode and a second light-emitting diode, wherein the first light-emitting diode comprises a first diode formed in a first die area and a first phosphor layer deposited over the first die area; the second light-emitting diode comprises a second diode and a second phosphor layer deposited over the second die area; the first diode and the second diode are electrically connected in anti-parallel; and wherein the optical properties of the second phosphor layer differ from the optical properties of the first phosphor layer.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: December 22, 2020
    Assignee: Lumileds LLC
    Inventors: Arjen Van Der Sude, Nicola Pfeffer, Pieter Johannes Quintus Van Voorst Vader, Peter Schmidt