Patents by Inventor Hsin-Mao Liu
Hsin-Mao Liu 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).
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Patent number: 8999736Abstract: A method of making an optoelectronic system in accordance with the present disclosure is disclosed. The method includes providing a temporary substrate; providing un-packaged optoelectronic elements having sidewalls, top surfaces, and bottom surfaces, at least one of the unpackaged optoelectronic elements having an electrode provided on a side of the bottom surfaces; attaching the bottom surfaces to the temporary substrate such that a trench is formed between two of the un-packaged optoelectronic elements; providing an adhesive material to fully fill the trench and cover the un-packaged optoelectronic elements such that the sidewalls and top surfaces of the un-packaged optoelectronic elements are fully enclosed by the adhesive material; providing a transparent substrate on the adhesive material; and removing the temporary substrate without removing all the adhesive material covering the optoelectronic elements.Type: GrantFiled: July 21, 2010Date of Patent: April 7, 2015Assignee: Epistar CorporationInventors: Min-Hsun Hsieh, Cheng-Nan Han, Steve Meng-Yuan Hong, Hsin-Mao Liu, Tsung-Xian Lee
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Publication number: 20140361319Abstract: An integrated lighting apparatus comprises a first control device including a semiconductor substrate, an integrated circuit block formed above a first portion of the semiconductor substrate, and a plurality of power pads formed above the integrated circuit block; a first light emitting device formed above a second portion of the semiconductor substrate; and a through plug passing through the semiconductor substrate for electrically connecting the first control device and the first light emitting device.Type: ApplicationFiled: August 22, 2014Publication date: December 11, 2014Inventors: Hsin-Mao LIU, Min-Hsun HSIEH, Tzer-Perng CHEN, Meng-Yuan HONG, Cheng Nan HAN, Tsung-Xian LEE, Ta-Cheng HSU, Chih-Chiang LU
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Patent number: 8890178Abstract: A light-emitting element includes a monolithic understructure including a first surface and a second surface different from the first surface; a plurality of light-emitting structure units disposed on the second surface; and a trench formed on a portion of the first surface and between the plurality of light-emitting structure units, wherein a height of the portion of the first surface is greater than a height of the second surface measured from a bottom of the monolithic understructure, and the portion of the first surface is exposed by the trench.Type: GrantFiled: September 13, 2011Date of Patent: November 18, 2014Assignee: Epistar CorporationInventors: Chien-Fu Huang, Chao-Hsing Chen, Chiu-Lin Yao, Hsin-Mao Liu, Chien-Kai Chung
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Patent number: 8847248Abstract: A light-emitting device includes: a carrier; a light-emitting structure formed on the carrier, wherein the light-emitting structure has a first surface facing the carrier, a second surface opposite to the first surface, and an active layer between the first surface and the second surface; a plurality of first trenches extended from the first surface and passing through the active layer so a plurality of light-emitting units is defined; and a plurality of second trenches extended from the second surface and passing through the active layer of each of the plurality of light-emitting units.Type: GrantFiled: November 25, 2013Date of Patent: September 30, 2014Assignee: Epistar CorporationInventors: Chien-Fu Huang, Chao-Hsing Chen, Chiu-Lin Yao, Hsin-Mao Liu, Chien-Kai Chung
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Patent number: 8816508Abstract: An integrated lighting apparatus includes at least a lighting device, a control device comprising an integrated circuit, and a connector that is used to electrically connect the lighting device and the control device. With the combination, the integrated circuit drives the lighting device in accordance with its various designed functionality, thus expands applications of the integrated lighting apparatus.Type: GrantFiled: July 20, 2011Date of Patent: August 26, 2014Assignee: Epistar CorporationInventors: Hsin-Mao Liu, Min-Hsun Hsieh, Tzer-Perng Chen, Meng-Yuan Hong, Cheng Nan Han, Tsung-Xian Lee, Ta-Cheng Hsu, Chih-Chiang Lu
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Patent number: 8759848Abstract: The application provides a light-emitting device, comprising a substrate; a plurality of first light-emitting diode units on the substrate, wherein every first light-emitting diode unit has a first electrode structure; and a plurality of second light-emitting diode units among the plurality of first light-emitting diode units, wherein every second light-emitting diode unit has a second electrode structure. The second electrode structure of the second light-emitting diode unit is flipped over and electrically connected with the adjacent first electrode structure of the first light-emitting diode unit.Type: GrantFiled: July 10, 2012Date of Patent: June 24, 2014Assignee: Epistar CorporationInventors: Chao-Hsing Chen, Chien-Kai Chung, Hsin-Mao Liu, Chiu-Lin Yao, Chien-Fu Huang
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Publication number: 20140139138Abstract: A light emitting apparatus disclosed herein comprises a first control apparatus, a first light emitting device, a sense apparatus, a second control apparatus, a power source and a second light emitting device, wherein the second light emitting device is electrically connected to the power source which is not connected to the first light emitting device. The sense apparatus senses both temperature and current of the first light emitting device to generate a second driving signal. The second driving signal is then provided to control the second light emitting device to emit a light for compensating the CCT shift of the light emitted by the first light emitting device.Type: ApplicationFiled: November 19, 2012Publication date: May 22, 2014Applicant: Epistar CorporationInventors: Hsin-Mao LIU, Zong-Xi Chen
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Publication number: 20140111104Abstract: The light-emitting device disclosed herein comprises a step down circuit and a current limit device, wherein the step down circuit prevents the current signal provided to the light-emitting device larger than the rating current value of the light-emitting device. Moreover, the current limit device only limits current signal while the power supply surges. The two stages protect circuit turn less power to heat.Type: ApplicationFiled: October 19, 2012Publication date: April 24, 2014Applicant: EPISTAR CORPORATIONInventors: Hsin-Mao Liu, Zong-Xi Chen
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Publication number: 20140077238Abstract: A light-emitting device includes: a carrier; a light-emitting structure formed on the carrier, wherein the light-emitting structure has a first surface facing the carrier, a second surface opposite to the first surface, and an active layer between the first surface and the second surface; a plurality of first trenches extended from the first surface and passing through the active layer so a plurality of light-emitting units is defined; and a plurality of second trenches extended from the second surface and passing through the active layer of each of the plurality of light-emitting units.Type: ApplicationFiled: November 25, 2013Publication date: March 20, 2014Applicant: Epistar CorporationInventors: Chien-Fu HUANG, Chao-Hsing CHEN, Chiu-Lin YAO, Hsin-Mao LIU, Chien-Kai CHUNG
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Publication number: 20140048825Abstract: This disclosure discloses a light-emitting display module display. The light-emitting display module comprises: a board; and a plurality of light-emitting diode modules arranged in an array configuration on the board; wherein one of the light-emitting diode modules comprises a plurality of encapsulated light-emitting units spaced apart from each other; and one of the encapsulated light-emitting units comprises a plurality of optoelectronic units, a first supporting, and a fence; and wherein the plurality of optoelectronic units are covered by the first supporting structure, and the fence surrounds the first supporting structure and the plurality of optoelectronic units.Type: ApplicationFiled: March 18, 2013Publication date: February 20, 2014Applicant: EPISTAR CORPORATIONInventors: Min Hsun Hsieh, Hsin-Mao Liu
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Publication number: 20130313594Abstract: An optoelectronic element includes an optoelectronic unit having a first top surface; a first metal layer on the first top surface; a first transparent structure surrounding the optoelectronic unit and exposing the first top surface; and a first contact layer on the first transparent structure, including a connective part electrically connected with the first metal layer.Type: ApplicationFiled: May 2, 2013Publication date: November 28, 2013Applicant: EPISTAR CORPORATIONInventors: Cheng-Nan HAN, Tsung-Xian Lee, Min-Hsun Hsieh, Hung-Hsuan Chen, Hsin-Mao Liu, Hsing-Chao Chen, Ching-San Tao, Chih-Peng Ni, Tzer-Perng Chen, Jen-Chau Wu, Masafumi Sano, Chih-Ming Wang
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Publication number: 20130314001Abstract: The present application provides a light-emitting device comprising a first light-emitting diode group; a second light-emitting diode group electrically connected to the first light-emitting diode group in parallel; and a temperature compensation. element electrically connected to the second light-emitting diode group in series; and a first switch device connected between the second light-emitting diode group and the temperature compensation element.Type: ApplicationFiled: August 1, 2013Publication date: November 28, 2013Applicant: EPISTAR CORPORATIONInventors: Hsin-Mao LIU, Zong-Xi CHEN, Min-Hsun HSIEH, Chien-Yan WANG
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Patent number: 8592827Abstract: A light-emitting device includes: a carrier; a light-emitting structure formed on the carrier, wherein the light-emitting structure has a first surface facing the carrier, a second surface opposite to the first surface, and an active layer between the first surface and the second surface; a plurality of first trenches extended from the first surface and passing through the active layer so a plurality of light-emitting units is defined; and a plurality of second trenches extended from the second surface and passing through the active layer of each of the plurality of light-emitting units.Type: GrantFiled: September 6, 2011Date of Patent: November 26, 2013Assignee: Epistar CorporationInventors: Chien-Fu Huang, Chao-Hsing Chen, Chiu-Lin Yao, Hsin-Mao Liu, Chien-Kai Chung
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Patent number: 8362501Abstract: The application illustrates a light-emitting device including a contact layer and a current spreading layer on the contact layer. A part of the contact layer is a rough structure and a part of the contact layer is a flat structure. A part of the current spreading layer is a rough structure and a part of the current spreading layer is a flat structure. The rough region of the contact layer and the rough region of the current spreading layer are substantially overlapped.Type: GrantFiled: April 29, 2010Date of Patent: January 29, 2013Assignee: Epistar CorporationInventors: Hung-Chih Yang, Yu-Jiun Shen, Hsin-Mao Liu
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Publication number: 20130015473Abstract: The application provides a light-emitting device, comprising a substrate; a plurality of first light-emitting diode units on the substrate, wherein every first light-emitting diode unit has a first electrode structure; and a plurality of second light-emitting diode units among the plurality of first light-emitting diode units, wherein every second light-emitting diode unit has a second electrode structure. The second electrode structure of the second light-emitting diode unit is flipped over and electrically connected with the adjacent first electrode structure of the first light-emitting diode unit.Type: ApplicationFiled: July 10, 2012Publication date: January 17, 2013Inventors: CHAO-HSING CHEN, CHIEN-KAI CHUNG, HSIN-MAO LIU, CHIU-LIN YAO, CHIEN-FU HUANG
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Publication number: 20120161651Abstract: This disclosure discloses a light-emitting device. The light-emitting device is capable of receiving a periodic voltage signal comprising a first voltage signal and a second voltage signal. The light-emitting device comprises: a first light-emitting unit; a second light-emitting unit; and a first switching unit comprising at least three switches for receiving the periodic voltage signal. The at least three switches are electrically connected with the first and second light-emitting units such that the first and second light-emitting units are connected in parallel with each other in the first voltage signal, and are connected in series with each other in the second voltage signal.Type: ApplicationFiled: December 23, 2011Publication date: June 28, 2012Inventors: Schang-Jing HON, Chao-Hsing Chen, Hsin-Mao Liu
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Publication number: 20120080697Abstract: A light-emitting element includes a supportive substrate; a reflective layer formed on the supportive substrate; a transparent layer formed on the reflective layer; a light-emitting stacked layer formed on the transparent layer; an etching-stop layer formed between the transparent layer and the reflective layer; and a plurality of contact parts formed between the light-emitting stacked layer and the transparent layer.Type: ApplicationFiled: July 1, 2011Publication date: April 5, 2012Applicant: Epistar CorporationInventors: Shih-I Chen, Chia-Liang Hsu, Tzu-Chieh Hsu, Han-Min Wu, Ye-Ming Hsu, Chien-Fu Huang, Chao-Hsing Chen, Chiu-Lin Yao, Hsin-Mao Liu, Chien-Kai Chun
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Publication number: 20120061694Abstract: An embodiment of the present application discloses a light-emitting structure, comprising a first unit; a second unit; a trench formed between the first unit and the second unit, and having a less steep sidewall and a steeper sidewall steeper than the less steep sidewall; and an electrical connection arranged on the less steep sidewall.Type: ApplicationFiled: September 13, 2011Publication date: March 15, 2012Applicant: Epistar CorporationInventors: Chien-Fu Shen, Chao-Hsing Chen, Tsun-Kai Ko, Schang-Jing Hon, Sheng-Jie Hsu, De-Shan Kuo, Hsin-Ying Wang, Chiu-Lin Yao, Chien-Fu Huang, Hsin-Mao Liu, Chien-Kai Chung
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Publication number: 20120061667Abstract: A light-emitting element includes: a substrate including a first surface and a second surface different from the first surface; a plurality of light-emitting structure units disposed on the second surface; and a trench formed on the first surface and between the plurality of light-emitting structure units.Type: ApplicationFiled: September 13, 2011Publication date: March 15, 2012Inventors: Chein-Fu Huang, Chao-Hsing CHEN, Chiu-Lin Yao, Hsin-Mao Liu, Chien-Kai Chung
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Publication number: 20120055532Abstract: A semiconductor optoelectronic device comprises a growth substrate; a semiconductor epitaxial stack formed on the growth substrate comprising a sacrificial layer with electrical conductivity formed on the growth substrate; a first semiconductor material layer having a first electrical conductivity formed on the sacrificial layer, and a second semiconductor material layer having a second electrical conductivity formed on the first semiconductor material layer; and a first electrode directly formed on the growth substrate and electrically connected to the semiconductor epitaxial stack via the growth substrate.Type: ApplicationFiled: September 6, 2011Publication date: March 8, 2012Applicant: Epistar CorporationInventors: Hsin-Ying Wang, Yi-Ming Chen, Tzu-Chieh Hsu, Chi-Hsing Chen, Chien-Kai Chung, Min-Hsun Hsieh, Chia-Liang Hsu, Chao-Hsing Chen, Chiu-Lin Yao, Chien-Fu Huang, Hsin-Mao Liu, Hsiang-Ling Chang