Patents by Inventor Yu-Chu Li

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

  • Patent number: 11502225
    Abstract: A light-emitting device includes an epitaxial structure, and first and second electrodes. The epitaxial structure has a first surface and a second surface opposite to each other, first dislocation density regions and second dislocation density regions. The first dislocation density regions and the second dislocation density regions are alternately disposed between the first surface and the second surface. A dislocation density of each first dislocation density region is lower than a dislocation density of each second dislocation density region and a quantity of the first dislocation density regions is at least ten. The epitaxial structure further includes a light-emitting layer, a first-type semiconductor layer and a second-type semiconductor layer disposed on two opposite sides of the light-emitting layer. The first electrode and the second electrode are electrically connected to the first-type semiconductor layer and the second-type semiconductor layer, respectively.
    Type: Grant
    Filed: October 20, 2019
    Date of Patent: November 15, 2022
    Assignee: PlayNitride Display Co., Ltd.
    Inventor: Yu-Chu Li
  • Patent number: 11462661
    Abstract: A micro light emitting diode chip includes a light emitting layer, a first type semiconductor layer, and a second type semiconductor layer. The light emitting layer includes a metal element and a plurality of non-epitaxial media. The non-epitaxial media are separated from each other to disperse the metal element. A spacing between any two adjacent non-epitaxial media is less than 100 nanometers. The first type semiconductor layer is disposed on one side of the light emitting layer. The second type semiconductor layer is disposed on the other side of the light emitting layer.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: October 4, 2022
    Assignee: PlayNitride Display Co., Ltd.
    Inventors: Yi-Ching Chen, Yu-Chu Li
  • Patent number: 11437485
    Abstract: A field effect transistor having at least a gate, source, and drain electrodes and a semiconductor channel for controlling transport of charge carriers between the source and drain electrodes, the gate being insulated from the channel by an dielectric, at least a portion of the dielectric disposed between the gate electrode and the semiconductor channel being doped or imbued with the an element which if doped or imbued into a semiconductor material would cause the semiconductor to be p-type. The p-type element used to dope or imbue the gate dielectric is preferably Mg.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: September 6, 2022
    Assignee: HRL LABORATORIES, LLC
    Inventors: Yu Cao, Rongming Chu, Zijian Ray Li
  • Patent number: 11417800
    Abstract: A micro semiconductor device and a micro semiconductor display are provided. The micro semiconductor device includes an epitaxial structure, a first electrode, a second electrode and a supporting layer. The epitaxial structure has a bottom surface and a top surface, wherein the bottom surface is defined as a central region and a peripheral region. A first electrode and a second electrode are disposed on the central region of the bottom surface of the epitaxial structure, or the first electrode is disposed on the central region of the bottom surface of the epitaxial structure and the second electrode is disposed on the top surface of the epitaxial structure. The supporting layer is disposed on the peripheral region of the bottom surface of the epitaxial structure.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: August 16, 2022
    Assignee: PLAYNITRIDE DISPLAY CO., LTD.
    Inventors: Ying-Tsang Liu, Pei-Hsin Chen, Yi-Chun Shih, Yi-Ching Chen, Yu-Chu Li, Tzu-Yang Lin, Yu-Hung Lai
  • Publication number: 20220172673
    Abstract: A micro light emitting diode display panel including a plurality of display units and a control element is provided. The plurality of display units are arranged in an array and each of the plurality of display units includes a first sub-pixel. The first sub-pixel includes a first micro light-emitting diode and a second micro light-emitting diode. The control element is configured to control light emission of the first micro light-emitting diode and the second micro light-emitting diode and determines operating currents of the first micro light-emitting diode and the second micro light-emitting diode. In a same display image, the operating current of the first micro light-emitting diode increases as an operating temperature of the first sub-pixel increases.
    Type: Application
    Filed: February 17, 2022
    Publication date: June 2, 2022
    Applicant: PlayNitride Display Co., Ltd.
    Inventors: Yun-Li Li, Yu-Chu Li, Kuan-Yung Liao
  • Patent number: 11302547
    Abstract: A carrier structure suitable for transferring or supporting a plurality of micro devices includes a carrier and a plurality of transfer units. The carrier has a carrier surface and a plurality of recesses disposed on the carrier surface. The transfer units are respectively disposed in the recesses and a plurality of transferring surfaces are exposed. Each micro device has a device surface. The transferring surface of each transfer unit is configured to be connected to the device surface of the corresponding micro device. A micro device structure including the carrier structure is also provided.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: April 12, 2022
    Assignee: PlayNitride Display Co., Ltd.
    Inventors: Pei-Hsin Chen, Yi-Chun Shih, Yi-Ching Chen, Ying-Tsang Liu, Yu-Chu Li, Huan-Pu Chang, Tzu-Yang Lin, Yu-Hung Lai
  • Patent number: 11302679
    Abstract: A micro-LED display panel including a substrate, an anisotropic conductive film, and a plurality of micro-LEDs is provided. The anisotropic conductive film is disposed on the substrate. The micro-LEDs and the anisotropic conductive film are disposed at the same side of the substrate, and the micro-LEDs are electrically connected to the substrate through the anisotropic conductive film. Each of the micro-LEDs includes an epitaxial layer and an electrode layer electrically connected to the epitaxial layer, and the electrode layers comprises a first electrode and a second electrode which are located between the substrate and the corresponding epitaxial layer. A ratio of a thickness of each of the electrode layers to a thickness of the corresponding epitaxial layer ranges from 0.1 to 0.5, and a gap between the first electrode and the second electrode of each of the micro-LEDs is in a range of 1 ?m to 30 ?m.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: April 12, 2022
    Assignee: PlayNitride Inc.
    Inventors: Ying-Tsang Liu, Yu-Chu Li, Pei-Hsin Chen, Yi-Ching Chen
  • Patent number: 11289463
    Abstract: A display panel includes a first substrate, a plurality of first color micro light emitting diodes (LEDs), a plurality of second color LEDs and a shading layer. The first substrate has a plurality of pixel zones arranged in an array form. Each of the first color LEDs has a first light emitting surface facing to a display direction. Each of the second color LEDs has a second light emitting surface facing to the display direction. Each of the pixel zones is provided with one of the first color micro LEDs and one of the second color LEDs. The shading layer is disposed in the pixel zones. The shading layer overlaps part of the first light emitting surface and part of the second light emitting surface in the display direction.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: March 29, 2022
    Assignee: PlayNitride Inc.
    Inventors: Pei-Hsin Chen, Yi-Ching Chen, Yi-Chun Shih, Yu-Chu Li, Ying-Tsang Liu, Chih-Chiang Lu, Gwo-Jiun Sheu, Po-Jen Su
  • Patent number: 11289012
    Abstract: A micro light emitting diode display panel including a plurality of pixels and a control element is provided. One of the pixels include a first sub-pixel. The first sub-pixel includes two micro light emitting diodes having different light wavelengths and controlled independently. The control element controls driving currents to the two micro light emitting diodes according to a gray level of the first sub-pixel, wherein a ratio of the driving current of the micro light emitting diode with larger light wavelength to the driving current of the micro light emitting diode with smaller light wavelength increases as the gray level of the first sub-pixel increases. A driving method of the micro light emitting diode display panel is also provided.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: March 29, 2022
    Assignee: PlayNitride Inc.
    Inventor: Yu-Chu Li
  • Patent number: 11257860
    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: Grant
    Filed: January 7, 2021
    Date of Patent: February 22, 2022
    Assignee: PlayNitride 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
  • Publication number: 20210399042
    Abstract: A transparent display panel with a light-transmitting substrate, a plurality of top-emitting micro light emitting diodes, a plurality of bottom-emitting micro light emitting diodes, and a light shielding layer. The light transmissive substrate has a surface. These top-emitting micro light emitting diodes and these bottom-emitting micro light emitting diodes are disposed on the surface of the light transmissive substrate. The bottom-emitting micro light emitting diodes has an epitaxial structure and a light shielding member, the epitaxial structure has a pair of upper and lower surfaces on the opposite sides, the lower surface faces toward the light transmissive substrate, and the light shielding member is disposed on the upper surface to shield the light emitted by the bottom-emitting micro light emitting diodes towards the upper surface.
    Type: Application
    Filed: September 1, 2021
    Publication date: December 23, 2021
    Applicant: PlayNitride Display Co., Ltd.
    Inventors: Yu-Chu Li, Kuan-Yung Liao, Pei-Hsin Chen, Yi-Ching Chen, Yi-Chun Shih
  • Patent number: 11177154
    Abstract: A carrier structure suitable for transferring or supporting a plurality of micro devices including a carrier and a plurality of transfer units is provided. The transfer units are disposed on the carrier. Each of the transfer units includes a plurality of transfer parts. Each of the transfer parts has a transfer surface. Each of the micro devices has a device surface. The transfer surfaces of the transfer parts of each of the transfer units are connected to the device surface of corresponding micro device. The area of each of the transfer surfaces is smaller than the area of the device surface of the corresponding micro device. A micro device structure using the carrier structure is also provided.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: November 16, 2021
    Assignee: PixeLED Display CO., LTD.
    Inventors: Pei-Hsin Chen, Yi-Chun Shih, Yi-Ching Chen, Ying-Tsang Liu, Yu-Chu Li, Huan-Pu Chang, Chih-Ling Wu, Yu-Yun Lo, Tzu-Yang Lin, Yu-Hung Lai
  • Patent number: 11164998
    Abstract: An electrode structure includes a first electrode and a second electrode disposed opposite to each other. The first electrode has a first side and a second side. The second side is located between the first side and the second electrode. The first electrode has a maximum vertical length and a minimum vertical length from the first side to the second side, and a ratio of the minimum vertical length to the maximum vertical length is less than 0.8. The second electrode and the first electrode are separated by a first vertical gap and a second vertical gap, and the second vertical gap is greater than the first vertical gap.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: November 2, 2021
    Assignee: PlayNitride Display Co., Ltd.
    Inventors: Yu-Chu Li, Pei-Hsin Chen, Yi-Chun Shih, Yi-Ching Chen
  • Publication number: 20210327955
    Abstract: A micro light-emitting device display apparatus includes a driving substrate and a plurality of micro light-emitting devices. The micro light-emitting devices are disposed on the driving substrate. The micro light-emitting devices include a plurality of first, second and third micro light-emitting devices. Each of the first, the second and the third micro light-emitting devices respectively has a plurality of first, second, and third light-emitting regions independently controlled. A first light-emitting region of a first micro light-emitting device, a second light-emitting region of a second micro light-emitting device, and a third light-emitting region of a third micro light-emitting device are located in a first pixel region. A first light-emitting region of another first micro light-emitting device, a second light-emitting region of another second micro light-emitting device, and another third light-emitting region of the third micro light-emitting device are located in a second pixel region.
    Type: Application
    Filed: December 21, 2020
    Publication date: October 21, 2021
    Applicant: PlayNitride Display Co., Ltd.
    Inventors: Yu-Chu Li, Yi-Ching Chen
  • Patent number: 11133294
    Abstract: A transparent display panel with a light-transmitting substrate, a plurality of top-emitting micro light emitting diodes, a plurality of bottom-emitting micro light emitting diodes, and a light shielding layer. The light transmissive substrate has a surface. These top-emitting micro light emitting diodes and these bottom-emitting micro light emitting diodes are disposed on the surface of the light transmissive substrate. The bottom-emitting micro light emitting diodes has an epitaxial structure and a light shielding member, the epitaxial structure has a pair of upper and lower surfaces on the opposite sides, the lower surface faces toward the light transmissive substrate, and the light shielding member is disposed on the upper surface to shield the light emitted by the bottom-emitting micro light emitting diodes towards the upper surface.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: September 28, 2021
    Assignee: PLAYNITRIDE INC.
    Inventors: Pei-Hsin Chen, Yi-Chun Shih, Yi-Ching Chen, Ying-Tsang Liu, Yu-Chu Li
  • Publication number: 20210225817
    Abstract: A micro LED display panel includes a driving substrate and a plurality of micro light emitting diodes (LEDs). The driving substrate has a plurality of pixel regions. Each of the pixel regions includes a plurality of sub-pixel regions. The micro LEDs are located on the driving substrate. At least one of the sub-pixel regions is provided with two micro LEDs of the micro LEDs electrically connected in series, and a dominant wavelength of the two micro LEDs is within a wavelength range of a specific color light. In a repaired sub-pixel region of the sub-pixel regions, only one of the two micro LEDs emits light. In a normal sub-pixel region of the sub-pixel regions, both of the two micro LEDs emit light.
    Type: Application
    Filed: April 6, 2021
    Publication date: July 22, 2021
    Applicant: PlayNitride Inc.
    Inventors: Kuan-Yung Liao, Ching-Liang Lin, Yun-Li Li, Yu-Chu Li
  • Patent number: 11056375
    Abstract: A micro LED carrier board is provided. The micro LED carrier board includes a substrate structure having a first surface and a second surface and having a central region and a peripheral region on the outside of the central region. The micro LED carrier board includes a plurality of micro LED elements forming an array and on the second surface of the substrate structure. The micro LED carrier board includes a patterned structure formed on the first surface and the second surface. The patterned structure has a first pattern density in the central region and a second pattern density in the peripheral region, and the first pattern density is different from the second pattern density.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: July 6, 2021
    Assignee: PLAYNITRIDE DISPLAY CO., LTD.
    Inventors: Pei-Hsin Chen, Yi-Ching Chen, Yu-Chu Li, Yi-Chun Shih, Ying-Tsang Liu, Yu-Hung Lai, Tzu-Yang Lin
  • Publication number: 20210175391
    Abstract: A micro semiconductor device and a micro semiconductor display are provided. The micro semiconductor device includes an epitaxial structure, a first electrode, a second electrode and a supporting layer. The epitaxial structure has a bottom surface and a top surface, wherein the bottom surface is defined as a central region and a peripheral region. A first electrode and a second electrode are disposed on the central region of the bottom surface of the epitaxial structure, or the first electrode is disposed on the central region of the bottom surface of the epitaxial structure and the second electrode is disposed on the top surface of the epitaxial structure. The supporting layer is disposed on the peripheral region of the bottom surface of the epitaxial structure.
    Type: Application
    Filed: February 19, 2021
    Publication date: June 10, 2021
    Applicant: PlayNitride Display Co., Ltd.
    Inventors: Ying-Tsang Liu, Pei-Hsin Chen, Yi-Chun Shih, Yi-Ching Chen, Yu-Chu Li, Tzu-Yang Lin, Yu-Hung Lai
  • Publication number: 20210151341
    Abstract: Herein disclosed are a micro-component transfer head, a micro-component transfer device, and a micro-component display. Said micro-component transfer head comprises a carrying surface that corresponds to a micro-component extraction area. Said extraction area conforms with a first geometric object, which comprises at least an acute angle. A second geometric object comprises at least a right angle and is constituted of n copies of the first geometric object, n being an integer greater than 1. The shape of the first geometric object differs from that of the second.
    Type: Application
    Filed: May 14, 2020
    Publication date: May 20, 2021
    Inventors: Yu-Chu LI, Pei-Hsin CHEN, Yi-Chun SHIH, Yi-Ching CHEN
  • Publication number: 20210135054
    Abstract: An electrode structure includes a first electrode and a second electrode disposed opposite to each other. The first electrode has a first side and a second side. The second side is located between the first side and the second electrode. The first electrode has a maximum vertical length and a minimum vertical length from the first side to the second side, and a ratio of the minimum vertical length to the maximum vertical length is less than 0.8. The second electrode and the first electrode are separated by a first vertical gap and a second vertical gap, and the second vertical gap is greater than the first vertical gap.
    Type: Application
    Filed: November 20, 2019
    Publication date: May 6, 2021
    Applicant: PlayNitride Display Co., Ltd.
    Inventors: Yu-Chu Li, Pei-Hsin Chen, Yi-Chun Shih, Yi-Ching Chen