Patents by Inventor Pei-Hsiang TSENG

Pei-Hsiang TSENG 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: 11557694
    Abstract: A light emitting device includes: a plurality of light emitting stacked layers, including a first surface and a second surface, wherein the second surface is electrically opposite to the first surface; a mesa structure; a current blocking layer disposed on the first surface, including a sidewall; and a transparent conductive layer disposed on the first surface; and a first pad electrode, disposed on the transparent conductive layer and on the first surface; wherein a retract distance of the transparent conductive layer with respect to an edge of the mesa structure is less than 3 ?m; and wherein a retract distance of the transparent conductive layer with respect to an edge of the sidewall of the current blocking layer is less than 3 ?m.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: January 17, 2023
    Assignee: EPISTAR CORPORATION
    Inventors: Chien Cheng Huang, Kuo-Wei Yen, Yu-Wei Kuo, Yao-Wei Yang, Pei-Hsiang Tseng
  • Publication number: 20210249561
    Abstract: A light emitting device includes: a plurality of light emitting stacked layers, including a first surface and a second surface, wherein the second surface is electrically opposite to the first surface; a mesa structure; a current blocking layer disposed on the first surface, including a sidewall; and a transparent conductive layer disposed on the first surface; and a first pad electrode, disposed on the transparent conductive layer and on the first surface; wherein a retract distance of the transparent conductive layer with respect to an edge of the mesa structure is less than 3 ?m; and wherein a retract distance of the transparent conductive layer with respect to an edge of the sidewall of the current blocking layer is less than 3 ?m.
    Type: Application
    Filed: February 19, 2021
    Publication date: August 12, 2021
    Inventors: Chien Cheng HUANG, Kuo-Wei YEN, Yu-Wei KUO, Yao-Wei YANG, Pei-Hsiang TSENG
  • Patent number: 10930818
    Abstract: A light emitting device includes: a plurality of light emitting stacked layers, including a first surface and a second surface, wherein the second surface is electrically opposite to the first surface; a mesa structure; and a current blocking (CB) layer disposed on the first surface; a transparent conductive layer disposed on or above the first surface; and a first pad electrode, disposed on the transparent conductive layer and on the first surface; wherein a sidewall of the CB layer comprises a first surface section and a second surface section having different slopes.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: February 23, 2021
    Assignee: EPISTAR CORPORATION
    Inventors: Chien Cheng Huang, Kuo-Wei Yen, Yu-Wei Kuo, Yao-Wei Yang, Pei-Hsiang Tseng
  • Publication number: 20180315888
    Abstract: A light emitting device includes: a plurality of light emitting stacked layers, including a first surface and a second surface, wherein the second surface is electrically opposite to the first surface; a mesa structure; and a current blocking (CB) layer disposed on the first surface; a transparent conductive layer disposed on or above the first surface; and a first pad electrode, disposed on the transparent conductive layer and on the first surface; wherein a sidewall of the CB layer comprises a first surface section and a second surface section having different slopes.
    Type: Application
    Filed: July 6, 2018
    Publication date: November 1, 2018
    Inventors: CHIEN CHENG HUANG, KUO-WEI YEN, YU-WEI KUO, YAO-WEI YANG, PEI-HSIANG TSENG
  • Patent number: 10043945
    Abstract: A method for fabricating a light emitting device, comprising: forming a plurality of light emitting stacked layers above a substrate; forming and patterning a current blocking (CB) layer on the light emitting stacked layers; forming a transparent conductive layer covering the light emitting stacked layers and the current blocking layer; etching the transparent conductive layer and exposing a reserved region for a first pad electrode and a mesa structure, respectively; and etching an exposed portion of the light emitting stacked layers and a portion of the current blocking layer to form a remaining current blocking layer, the mesa structure and a first opening.
    Type: Grant
    Filed: June 18, 2017
    Date of Patent: August 7, 2018
    Assignee: EPISTAR CORPORATION
    Inventors: Chien Cheng Huang, Kuo-Wei Yen, Yu-Wei Kuo, Yao-Wei Yang, Pei-Hsiang Tseng
  • Publication number: 20170294558
    Abstract: A method for fabricating a light emitting device, comprising: forming a plurality of light emitting stacked layers above a substrate; forming and patterning a current blocking (CB) layer on the light emitting stacked layers; forming a transparent conductive layer covering the light emitting stacked layers and the current blocking layer; etching the transparent conductive layer and exposing a reserved region for a first pad electrode and a mesa structure, respectively; and etching an exposed portion of the light emitting stacked layers and a portion of the current blocking layer to form a remaining current blocking layer, the mesa structure and a first opening.
    Type: Application
    Filed: June 18, 2017
    Publication date: October 12, 2017
    Inventors: CHIEN CHENG HUANG, KUO-WEI YEN, YU-WEI KUO, YAO-WEI YANG, PEI-HSIANG TSENG
  • Patent number: 9705035
    Abstract: A light emitting device, includes a substrate; a plurality of light emitting stacked layers, comprising a first surface and a second surface; a mesa structure; a current blocking (CB) layer; a transparent conductive layer; a first pad electrode and a second pad electrode; and a passivation layer, wherein the second surface is electrically opposite to the first surface, the transparent conductive layer is disposed on or above the first surface, the first pad electrode is disposed on the transparent conductive layer and on the first surface, and the second pad electrode is disposed on the second surface and on the mesa structure, the CB layer is disposed on the first surface, surrounded by the transparent conductive layer, and at a lower region of the first pad electrode, a portion of the first pad electrode is filling a first opening of the transparent conductive layer and the CB layer.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: July 11, 2017
    Assignee: Epistar Corporation
    Inventors: Chien Cheng Huang, Kuo-Wei Yen, Yu-Wei Kuo, Yao-Wei Yang, Pei-Hsiang Tseng
  • Publication number: 20170194531
    Abstract: A light emitting device, includes a substrate; a plurality of light emitting stacked layers, comprising a first surface and a second surface; a mesa structure; a current blocking (CB) layer; a transparent conductive layer; a first pad electrode and a second pad electrode; and a passivation layer, wherein the second surface is electrically opposite to the first surface, the transparent conductive layer is disposed on or above the first surface, the first pad electrode is disposed on the transparent conductive layer and on the first surface, and the second pad electrode is disposed on the second surface and on the mesa structure, the CB layer is disposed on the first surface, surrounded by the transparent conductive layer, and at a lower region of the first pad electrode, a portion of the first pad electrode is filling a first opening of the transparent conductive layer and the CB layer.
    Type: Application
    Filed: December 30, 2015
    Publication date: July 6, 2017
    Inventors: CHIEN CHENG HUANG, KUO-WEI YEN, YU-WEI KUO, YAO-WEI YANG, PEI-HSIANG TSENG
  • Patent number: 9404962
    Abstract: An apparatus for measuring the optoelectronic characteristics of a light-emitting diode includes: a container including a light input port and a light output port; a measurement module connected to the light output port of the container; a sample holder under the container for holding a light-emitting diode under test, wherein a surface of the measurement module reflects more than 50% of the luminous flux generated by the light-emitting diode under test; and a light gathering unit between the container and the sample holder, wherein an interior wall of the light gathering unit reflects more than 50% of the luminous flux generated by the light-emitting diode under test.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: August 2, 2016
    Assignee: EPISTAR CORPORATION
    Inventors: Ming-Hong Huang, Pei-Hsiang Tseng, Pei-Hsiu Shih, Chia-Hung Yu, Min-Shun Huang
  • Patent number: 8749773
    Abstract: Disclosed is a method for testing a light-emitting device comprising the steps of: providing an integrating sphere comprising an inlet port and a first exit port; disposing the light-emitting device close to the inlet port of the integrating sphere; providing a current source to drive the light-emitting device to form an image of the light-emitting device in driven state; providing an image receiving device and to receive the image of the light-emitting device, wherein the image receiving device is connected to the first exit port of the integrating sphere; and determining a luminous intensity of the light-emitting device according to the image. An apparatus for testing a light-emitting device is also disclosed.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: June 10, 2014
    Assignee: Epistar Corporation
    Inventors: Tang-Chung Chao, Pei-Hsiang Tseng, Jia-Kuan Kuo, Guan-Hung Wu, Yuan-Hao Su, Chi-Hsin Ho, Chia-Liang Hsu, Chih-Chiang Lu
  • Publication number: 20140084188
    Abstract: An apparatus for measuring the optoelectronic characteristics of a light-emitting diode includes: a container including a light input port and a light output port; a measurement module connected to the light output port of the container; a sample holder under the container for holding a light-emitting diode under test, wherein a surface of the measurement module reflects more than 50% of the luminous flux generated by the light-emitting diode under test; and a light gathering unit between the container and the sample holder, wherein an interior wall of the light gathering unit reflects more than 50% of the luminous flux generated by the light-emitting diode under test.
    Type: Application
    Filed: September 26, 2013
    Publication date: March 27, 2014
    Applicant: EPISTAR CORPORATION
    Inventors: Ming-Hong HUANG, Pei-Hsiang TSENG, Pei-Hsiu SHIH, Chia-Hung YU, Min-Shun HUANG