Patents by Inventor Yu-Hung Lai

Yu-Hung Lai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200176509
    Abstract: A micro semiconductor structure is provided. The micro semiconductor structure includes a substrate, at least one supporting layer, and at least one micro semiconductor device. The supporting layer includes at least one upper portion and a bottom portion, wherein the upper portion extends in a first direction. The length L1 of the upper portion in the first direction is greater than the length L2 of the bottom portion in the first direction. Furthermore, the bottom surface of the micro semiconductor device is in direct contact with the upper portion of the supporting layer.
    Type: Application
    Filed: June 10, 2019
    Publication date: June 4, 2020
    Applicant: PlayNitride Display Co., Ltd.
    Inventors: Ying-Tsang Liu, Pei-Hsin Chen, Yi-Chun Shih, Yi-Ching Chen, Yu-Chu Li, Huan-Pu Chang, Tzu-Yang Lin, Yu-Hung Lai
  • Patent number: 10658345
    Abstract: A display panel includes a substrate, a plurality of first light emitting diodes (LEDs), a plurality of second LEDs, a plurality of first common electrodes, and a plurality of second common electrodes. Each pixel unit of the substrate includes a first sub-pixel region and a second sub-pixel region. The first LEDs are disposed on the substrate and located in the first sub-pixel regions, and the second LEDs are disposed on the substrate and located in the second sub-pixel regions. A dominant wavelength of each of the first LEDs is different from that of each of the second LEDs. The first common electrodes are connected to and form an ohmic contact with the first LEDs. The second common electrodes are connected to and form an ohmic contact with the second LEDs. A material of the first common electrodes is different from that of the second common electrodes.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: May 19, 2020
    Assignee: PlayNitride Inc.
    Inventors: Yu-Hung Lai, Chih-Ling Wu
  • Patent number: 10632727
    Abstract: A method of transferring micro devices is provided. A carrier substrate including a buffer layer and a plurality of micro devices is provided. The buffer layer is located between the carrier substrate and the micro devices. The micro devices are separated from one another and positioned on the carrier substrate through the buffer layer. A receiving substrate contacts the micro devices disposed on the carrier substrate. A temperature of at least one of the carrier substrate and the receiving substrate is changed after the micro devices contact the receiving substrate. At least a portion of the micro devices are transferred from the carrier substrate onto the receiving substrate after changing the temperature of at least one of the carrier substrate and the receiving substrate.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: April 28, 2020
    Assignee: PlayNitride Inc.
    Inventors: Yun-Li Li, Tzu-Yang Lin, Yu-Hung Lai, Pei-Hsin Chen
  • Patent number: 10615313
    Abstract: A display device including a backplane, a plurality of light-emitting devices, a first distributed Bragg reflector layer and a second distributed Bragg reflector layer is provided. The light-emitting devices are disposed on the backplane. The first distributed Bragg reflector layer is disposed between the backplane and the light-emitting devices. The light-emitting devices are disposed between the first distributed Bragg reflector layer and the second distributed Bragg reflector layer. A projected area of the first distributed Bragg reflector layer on the backplane is larger than a projected area of one of the light-emitting devices on the backplane or a projected area of the second distributed Bragg reflector layer on the backplane is larger than a projected area of one light-emitting device on the backplane.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: April 7, 2020
    Assignee: PlayNitride Inc.
    Inventors: Yun-Li Li, Yu-Hung Lai, Tzu-Yang Lin
  • Publication number: 20200091370
    Abstract: A method of manufacturing display device is disclosed. a substrate includes a basal layer and metal contacts on the top surface. An insulation layer is disposed on the top surface and includes a first mounting surface and a bottom surface. Multiple grooves are formed on the insulation layer and each extends from the first mounting surface to the bottom surface. The grooves respectively correspond to the metal contacts and expose respective metal contacts. An electromagnetic force is provided with a direction from the basal layer toward the insulation layer. A droplet containing multiple micro components is provided on the first mounting surface. A configuration of an electrode of the micro component corresponds to a configuration of one of the grooves. The electrode is attracted to the corresponding groove by the electromagnetic force so as to electrically contact the metal contact.
    Type: Application
    Filed: August 14, 2019
    Publication date: March 19, 2020
    Applicant: PLAYNITRIDE INC.
    Inventors: Tzu-Yu TING, Yu-Hung LAI, Hsiang-Wen TANG, Yi-Chun SHIH
  • Patent number: 10593658
    Abstract: A method of forming a light emitting device is provided. A carrier with a plurality of buffer pads and a plurality of light emitting diode chips is provided, wherein the buffer pads are disposed between the carrier and the light emitting diode chips and are with Young's modulus of 2˜10 GPa. The carrier is positioned over a receiving substrate. A thermal bonding process is performed to electrically connect the light emitting diode chips to the receiving substrate, and wherein the buffer pads and the receiving substrate are located at opposite sides of each light emitting diode chip.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: March 17, 2020
    Assignee: PlayNitride Inc.
    Inventors: Tzu-Yang Lin, Yu-Hung Lai, Yu-Yun Lo
  • Patent number: 10586894
    Abstract: A light emitting unit has a first electrode, a second electrode and an epitaxial structure disposed between the first electrode and the second electrode. The epitaxial structure has a light emission layer, a first type semiconductor layer disposed between the light emission layer and the first electrode, and a second type semiconductor layer disposed between the light emission layer and the second electrode. A first surface of the second type semiconductor layer is facing the light emission layer. The second type semiconductor layer has a second surface opposite to the first surface and the second surface has at least one recess. At least portion of the second electrode is disposed within the at least one recess. A display device has a substrate, a first electrode connection layer, a second electrode connection layer, and a plurality of aforementioned light emitting units.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: March 10, 2020
    Assignee: PlayNitride Inc.
    Inventor: Yu-Hung Lai
  • Publication number: 20200075805
    Abstract: A micro light-emitting diode chip includes an epitaxial structure, a first electrode, and a second electrode. The epitaxial structure includes a first type doped semiconductor layer, a light emitting layer, and a second type doped semiconductor layer, and the epitaxial structure further includes a first surface, a side surface and a second surface opposite to the first surface. The side surface of the epitaxial structure connects to an outer edge of the first surface and an outer edge of the second surface. The first electrode is disposed on the first surface, and is electrically connected to the first type doped semiconductor layer and contacts the first type doped semiconductor layer on a portion of the first surface. The second electrode is disposed on and surrounds the side surface, and electrically connected to the second type doped semiconductor layer, and directly contacts the second type doped semiconductor layer on a portion of the side surface.
    Type: Application
    Filed: November 7, 2019
    Publication date: March 5, 2020
    Applicant: PlayNitride Inc.
    Inventors: Yu-Hung Lai, Yu-Yun Lo, Tzu-Yang Lin
  • Patent number: 10580825
    Abstract: Disclosed are a method of manufacturing display device, an epitaxial wafer and a display device that includes a display substrate, a first sub pixel unit and a second sub pixel unit. The first sub pixel unit and the second sub pixel unit belong to same color type. The first sub pixel unit and the second sub pixel unit are formed from an epitaxial structure on the epitaxial wafer. The first sub pixel unit and the second sub pixel unit are formed and transferred to the display substrate from the epitaxial wafer. A first light emitting area of the first sub pixel unit and a second light emitting area of the second sub pixel unit are related to at least the photoluminescence measurement result of the epitaxial wafer.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: March 3, 2020
    Assignee: PLAYNITRIDE INC.
    Inventor: Yu-Hung Lai
  • Publication number: 20200035749
    Abstract: A micro LED display panel includes a display area, a plurality of micro light-emitting elements and a plurality of micro control elements. The plurality of micro light-emitting elements is disposed in the display area and include a plurality of first color micro LEDs and a plurality of second color micro LEDs. A light wavelength of each of the first color micro LEDs is different from a light wavelength of each of the second color micro LEDs. The plurality of micro control elements is disposed in the display area, and include a plurality of first color micro circuit-chips and a plurality of second color micro circuit-chips. The plurality of first color micro circuit-chips control the plurality of first color micro LEDs, and the plurality of second color micro circuit-chips control the plurality of second color micro LEDs.
    Type: Application
    Filed: December 4, 2018
    Publication date: January 30, 2020
    Applicant: PIXELED DISPLAY CO., LTD.
    Inventors: Pei-Hsin CHEN, Yi-Chun SHIH, Yi-Ching CHEN, Ying-Tsang LIU, Yu-Chu LI, Tzu-Yang LIN, Yu-Hung LAI
  • Patent number: 10522520
    Abstract: A micro-LED display panel including a substrate, a plurality of micro-LEDs, and a plurality of reinforced structures is provided. The micro-LEDs are disposed at a side of the substrate, wherein each of the micro-LEDs comprises an epitaxial layer and an electrode layer electrically connected to the epitaxial layer, and the electrode layer are located between the epitaxial layers and the substrate. Each of the micro-LEDs is electrically connected to the substrate through the corresponding electrode layer. Each of electrode layers includes a first electrode and a second electrode. The reinforced structures are disposed between the micro-LEDs and the substrate respectively, and each of the reinforced structures is located between the corresponding the first electrode and the second electrode. A Young's modulus of each of reinforced structures is smaller than a Young's modulus of the corresponding electrode layer.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: December 31, 2019
    Assignee: PixeLED Display CO., LTD.
    Inventors: Ying-Tsang Liu, Yu-Chu Li, Pei-Hsin Chen, Yi-Ching Chen, Tzu-Yang Lin, Yu-Hung Lai
  • Patent number: 10522712
    Abstract: A micro light-emitting diode chip includes an epitaxial structure, a first electrode, and a second electrode. The epitaxial structure includes a first type doped semiconductor layer, a light emitting layer, and a second type doped semiconductor layer, and the epitaxial structure further includes a first surface, side surface and a second surface opposite to the first surface. The first electrode is disposed on the first surface, and is electrically connected to the first type doped semiconductor layer and contacted the first type doped semiconductor layer on a portion of the first surface. The second electrode is disposed on the first surface and the side surface, and is electrically connected to the second type doped semiconductor layer and contacted the second type doped semiconductor layer on a portion of the side surface. A length of a diagonal of the micro light-emitting diode chip is greater than 1 micrometer and is less than or equal to 140 micrometers.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: December 31, 2019
    Assignee: PlayNitride Inc.
    Inventors: Yu-Hung Lai, Yu-Yun Lo, Tzu-Yang Lin
  • Publication number: 20190378452
    Abstract: A display apparatus includes a driving substrate and a plurality of micro light-emitting devices (LEDs). The driving substrate has a plurality of pixel regions. The plurality micro LEDs are disposed in in each of the pixel regions and electrically connected to the driving substrate. Orthogonal projection areas of the micro LEDs in each of the pixel regions on the driving substrate are equal. At least two micro LEDs in each of the pixel regions have different effective light-emitting areas.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 12, 2019
    Applicant: PlayNitride Display Co., Ltd.
    Inventors: Tzu-Yang Lin, Yu-Hung Lai, Pei-Hsin Chen, Yi-Chun Shih, Yi-Ching Chen, Yu-Chu Li, Ying-Tsang Liu
  • Patent number: 10476043
    Abstract: A display including a back plate, a plurality of light emitting devices and a plurality of compensating light emitting devices is provided. The back plate has a plurality of pixels and at least one compensated region. The compensated region includes some of the pixels. The light emitting devices are arranged in all the pixels on the back plate. The compensated light emitting devices are disposed on the back plate and located in each pixel in the compensated region respectively. At least one of the pixels in the compensated region is dead pixel. Besides, a repair method of the display is also provided.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: November 12, 2019
    Assignee: PlayNitride Inc.
    Inventors: Yu-Hung Lai, Yun-Li Li, Tzu-Yang Lin
  • Publication number: 20190326143
    Abstract: A transfer substrate is configured to transfer a plurality of micro components from a first substrate to a second substrate. The transfer substrate comprises a base and a plurality of transfer heads. The base includes an upper surface. The plurality of transfer heads is disposed on the upper surface of the base, wherein each transfer head includes a first surface and a second surface opposite to each other and the transfer heads contact the base with the first surfaces thereof. A plurality of adhesion lumps is separated from each other, wherein each adhesion lump is disposed on the second surface of one of the transfer heads. A CTE of the base is different from CTEs of the transfer heads.
    Type: Application
    Filed: April 17, 2019
    Publication date: October 24, 2019
    Applicant: PLAYNITRIDE INC.
    Inventors: Yu-Hung LAI, Tzu-Yang LIN, Yun-Li LI
  • Publication number: 20190319017
    Abstract: Disclosed are an epitaxial wafer and a display device that includes a display substrate, a first sub pixel unit and a second sub pixel unit. The first sub pixel unit has a first luminous area, and the second sub pixel unit has a second luminous area different from the first luminous area. The first sub pixel unit and the second sub pixel unit belong to the same color type and are located in different pixel units. The first sub pixel unit is a sub epitaxial structure emitting light within a first photoluminescent wavelength, the second sub pixel unit is a sub epitaxial structure emitting light within a second photoluminescent wavelength, and the first photoluminescent wavelength is different from the second photoluminescent wavelength. The difference between electroluminescent wavelengths of the first sub pixel unit and the second sub pixel unit is less than or equal to 2 nm.
    Type: Application
    Filed: June 27, 2019
    Publication date: October 17, 2019
    Applicant: PLAYNITRIDE INC.
    Inventor: Yu-Hung LAI
  • Patent number: 10431569
    Abstract: A method of transferring micro devices is provided. A carrier substrate including a buffer layer and a plurality of micro devices is provided. The buffer layer is located between the carrier substrate and the micro devices. The micro devices are separated from one another and positioned on the carrier substrate through the buffer layer. A receiving substrate contacts the micro devices disposed on the carrier substrate. A temperature of at least one of the carrier substrate and the receiving substrate is changed, so that at least a portion of the micro devices are released from the carrier substrate and transferred onto the receiving substrate. A number of the at least a portion of the micro devices is between 1000 and 2000000.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: October 1, 2019
    Assignee: PlayNitride Inc.
    Inventors: Yun-Li Li, Tzu-Yang Lin, Yu-Hung Lai, Pei-Hsin Chen
  • Publication number: 20190296188
    Abstract: A ?LED chip having at least two light-emitting regions and including an epitaxial structure layer, a first-type electrode and at least two second-type electrodes is provided. The epitaxial structure layer includes a first-type semiconductor layer, at least two light-emitting layers and at least two second-type semiconductor layers. The light-emitting layers are respectively located in the light-emitting regions, one of the light-emitting layers has a first area, and the other light-emitting layer has a second area. A ratio of the first area to the second area is between 1.5 and 3, and a difference in current densities respectively passing through the at least two light-emitting regions is less than 10%. The light-emitting layers are located between the first-type semiconductor layer and the second-type semiconductor layers. The first-type electrode is electrically connected to the first-type semiconductor layer.
    Type: Application
    Filed: June 12, 2019
    Publication date: September 26, 2019
    Applicant: PlayNitride Display Co., Ltd.
    Inventors: Yu-Hung Lai, Yu-Yun Lo, Tzu-Yang Lin, Yun-Li Li
  • Patent number: 10424615
    Abstract: A display panel including a backplane, a first bonding layer, a plurality of micro light-emitting diodes, a first insulation layer, and a second bonding layer is provided. The first bonding layer is disposed on the backplane. The micro light-emitting diodes are disposed on the first bonding layer and are electrically connected to the first bonding layer. The first insulation layer is located between any adjacent two of the micro light-emitting diodes. The first insulation layer has a concave-convex surface. The second bonding layer is disposed on the micro light-emitting diodes and the first insulation layer and is electrically connected to the micro light-emitting diodes. A micro light-emitting diode apparatus including a substrate, a plurality of micro light-emitting diodes, and a first insulation layer is provided. The first insulation layer is located between any adjacent two of the micro light-emitting diodes. The first insulation layer has a concave-convex surface.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: September 24, 2019
    Assignee: PlayNitride Inc.
    Inventors: Chih-Ling Wu, Yu-Hung Lai, Yi-Min Su, Yu-Yun Lo, Tzu-Yang Lin
  • Publication number: 20190288245
    Abstract: A display including a back plate, a plurality of light emitting devices and a plurality of compensating light emitting devices is provided. The back plate has a plurality of pixels and at least one compensated region. The compensated region includes some of the pixels. The light emitting devices are arranged in all the pixels on the back plate. The compensated light emitting devices are disposed on the back plate and located in each pixel in the compensated region respectively. At least one of the pixels in the compensated region is dead pixel. Besides, a repair method of the display is also provided.
    Type: Application
    Filed: June 5, 2019
    Publication date: September 19, 2019
    Applicant: PlayNitride Inc.
    Inventors: Yu-Hung Lai, Yun-Li Li, Tzu-Yang Lin