Patents Assigned to Epistar Corporation
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Patent number: 11430916Abstract: A light-emitting device comprises a semiconductor layer; a pad electrode comprising a periphery disposed on the semiconductor layer; a finger electrode connected to the pad electrode, wherein the finger electrode comprises a first portion extended from the periphery of the pad electrode and a second portion connected to the first portion; and a plurality of first current blocking regions formed on the semiconductor layer, separated from the pad electrode and formed under the finger electrode, wherein one of the plurality of first current blocking regions is most close to the pad electrode and is separated from the pad electrode by a first distance, adjacent two of others of the plurality of first current blocking regions are separated from each other by a second distance, and the first distance is longer than the second distance.Type: GrantFiled: November 2, 2020Date of Patent: August 30, 2022Assignee: EPISTAR CORPORATIONInventors: Chien-Hua Chou, Tai-Chun Wang, Chih-Tsung Su, Biau-Dar Chen
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Patent number: 11423830Abstract: A display includes a substrate with a plurality of electronic control elements, an array of light-emitting diodes having a semiconductor layer, a plurality of light emitting units disposed on the semiconductor layer, and a plurality of first electrodes disposed on the semiconductor layer, an bonding layer disposed between the substrate and the array of light-emitting diodes, and a plurality of wavelength conversion elements disposed on the semiconductor layer and spaced apart from each other. The plurality of wavelength conversion elements and the plurality of light emitting units are disposed at different sides of the semiconductor layer. The plurality of wavelength conversion elements is arranged in positions corresponding to the plurality of light-emitting units.Type: GrantFiled: April 19, 2021Date of Patent: August 23, 2022Assignee: EPISTAR CORPORATIONInventor: Min-Hsun Hsieh
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Patent number: 11424383Abstract: A semiconductor device includes: a first semiconductor region; and a first electrode on the first semiconductor region; wherein first semiconductor region includes a first layer and a second layer, the second layer includes a first portion and a second portion adjacent to the first portion, the first portion has a first thickness, the second portion has a second thickness less than the first thickness, the first layer includes a first material and a first dopant, the first material includes multiple elements, the first dopant has a first concentration, the second layer includes a second material and a second dopant, the second material includes multiple elements, the second dopant has a second concentration, one of the elements of the first material of the first layer is different from the elements of the second material of the second layer.Type: GrantFiled: October 21, 2020Date of Patent: August 23, 2022Assignee: EPISTAR CORPORATIONInventors: Tzu-Chieh Hu, Wei-Chieh Lien, Chen Ou, Chia-Ming Liu, Tzu-Yi Chi
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Patent number: 11417802Abstract: A light-emitting device, includes: a semiconductor stack, including a top surface, wherein the top surface includes a first region and a second region which are coplanar; a current barrier layer formed on the first region, wherein the current barrier layer includes an insulating material; and a transparent conductive layer formed on the current barrier layer and the second region; and a first electrode formed on the transparent conductive layer; wherein the current barrier layer includes: an electrode region at a position corresponding to the first electrode, having a shape substantially the same as the first electrode; and a plurality of extension regions extending from the electrode region and not covered by the first electrode.Type: GrantFiled: February 25, 2020Date of Patent: August 16, 2022Assignee: EPISTAR CORPORATIONInventors: Jar-Yu Wu, Ching-Jang Su, Chun-Lung Tseng, Ching-Hsing Shen
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Patent number: 11404474Abstract: A light-emitting device, includes: a substrate, comprising a top surface; a first edge and a second edge opposite to the first edge; a plurality of light-emitting units arranged in N rows on the substrate, wherein the N rows comprises a first row at the first edge and a Nth row at the second edge; and a plurality of connection electrodes, formed on and electrically connecting the plurality of light-emitting units; wherein the plurality of light-emitting units comprises a first light-emitting unit in the first row, and the first light-emitting unit comprises a first notch on the first edge wherein the first notch comprises a bottom composed by the top surface.Type: GrantFiled: August 28, 2020Date of Patent: August 2, 2022Assignee: EPISTAR CORPORATIONInventors: Cheng-Yu Chen, Hui-Chun Yeh, Chien-Fu Shen
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Patent number: 11398583Abstract: A light-emitting device, includes a substrate structure, including a base portion having a surface and a plurality of protrusions regularly formed on the base portion; a buffer layer covering the plurality of protrusions and the surface; and III-V compound semiconductor layers formed on the buffer layer; wherein one of the plurality of protrusions includes a first portion and a second portion formed on the first portion and the first portion is integrated with the base portion; and wherein the base portion includes a first material and the first portion includes the first material.Type: GrantFiled: September 2, 2020Date of Patent: July 26, 2022Assignee: EPISTAR CORPORATIONInventors: Peng Ren Chen, Yu-Shan Chiu, Wen-Hsiang Lin, Shih-Wei Wang, Chen Ou
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Patent number: 11380824Abstract: The application discloses a light-emitting device including a carrier, a light-emitting element and a connecting structure. The carrier includes a first connecting portion and a first necking portion extended from the first connecting portion. The first connecting portion has a first width, and the first necking portion has a second width. The second width is less than the first width. The light-emitting element includes a first light-emitting layer being able to emit a first light and a first contacting electrode formed under the first light-emitting layer. The first contacting electrode is corresponded to the first connecting portion. The connecting structure includes a first electrical connecting portion and a protecting portion surrounding the first electrical connecting portion. The first electrical connecting portion is electrically connected to the first connecting portion and the first contacting electrode.Type: GrantFiled: August 11, 2020Date of Patent: July 5, 2022Assignee: EPISTAR CORPORATIONInventors: Ching-Tai Cheng, Shau-Yi Chen, Yih-Hua Renn, Wei-Shan Hu, Pei-Hsuan Lan
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Patent number: 11380828Abstract: A light-emitting device includes a carrier, a light-emitting unit disposed on the carrier, a reflective element arranged on the light-emitting unit, and an optical element arranged on the carrier and surrounding the light-emitting unit.Type: GrantFiled: December 21, 2020Date of Patent: July 5, 2022Assignee: EPISTAR CORPORATIONInventors: Min-Hsun Hsieh, Shih-An Liao
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Patent number: 11374146Abstract: A semiconductor device is provided, which includes an active structure and a first semiconductor layer. The active structure includes an active region having a topmost surface and a bottommost surface, and a first dopant distributing from the topmost surface to the bottommost surface. The first semiconductor layer is located under the active structure and includes a second dopant. The active region includes a semiconductor material including As.Type: GrantFiled: May 15, 2020Date of Patent: June 28, 2022Assignee: EPISTAR CORPORATIONInventors: Meng-Yang Chen, Yuan-Ting Lin
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Patent number: 11374154Abstract: A light-emitting device comprises a light-emitting element, a covering structure, a quantum dot material block, and an adhesive structure is disclosed. The covering structure has a depressed part. The quantum dot material block is filled into the depressed part and enclosed by the light-emitting element and the covering structure. The light-emitting element, the covering structure, and the quantum dot material block are bonded together through the adhesive structure. Since the quantum dot material block is enclosed by the covering structure and the light-emitting element, the outer moisture and oxygen are blocked by the covering structure and the light-emitting element from the quantum dot material block, the decreasing emitting efficiency of the quantum dot material is further alleviated.Type: GrantFiled: November 5, 2019Date of Patent: June 28, 2022Assignee: EPISTAR CORPORATIONInventors: Tsung-Hong Lu, Ching-Tai Cheng
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Patent number: 11362060Abstract: Disclosed is a die-bonding method which provides a target substrate having a circuit structure with multiple electrical contacts and multiple semiconductor elements each semiconductor element having a pair of electrodes, arranges the multiple semiconductor elements on the target substrate with the pair of electrodes of each semiconductor element aligned with two corresponding electrical contacts of the target substrate, and applies at least one energy beam to join and electrically connect the at least one pair of electrodes of every at least one of the multiple semiconductor elements and the corresponding electrical contacts aligned therewith in a heating cycle by heat carried by the at least one energy beam in the heating cycle. The die-bonding method delivers scattering heated dots over the target substrate to avoid warpage of PCB and ensures high bonding strength between the semiconductor elements and the circuit structure of the target substrate.Type: GrantFiled: August 27, 2019Date of Patent: June 14, 2022Assignee: EPISTAR CORPORATIONInventors: Min-Hsun Hsieh, Shih-An Liao, Ying-Yang Su, Hsin-Mao Liu, Tzu-Hsiang Wang, Chi-Chih Pu
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Patent number: 11355550Abstract: An optoelectronic device comprises a substrate; a first and a second optoelectronic units formed on the substrate; a plurality of third optoelectronic units formed on the substrate, electrically connected to the first optoelectronic unit and the second optoelectronic unit; a plurality of first electrodes respectively formed on the first optoelectronic unit, the second optoelectronic unit and the plurality of third optoelectronic units; a plurality of second electrodes respectively formed on the first optoelectronic unit, the second optoelectronic unit and the plurality of third optoelectronic units; an optical layer surrounding the first optoelectronic unit, the second optoelectronic unit and the plurality of third optoelectronic units in a top view of the optoelectronic device; a third electrode formed on the first optoelectronic unit and one of the plurality of third optoelectronic units; and a fourth electrode formed on the second optoelectronic unit and another one of the plurality of third optoelectronicType: GrantFiled: October 7, 2020Date of Patent: June 7, 2022Assignee: EPISTAR CORPORATIONInventors: Chao Hsing Chen, Jia Kuen Wang, Chien Fu Shen, Chun Teng Ko
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Patent number: 11355677Abstract: A light-emitting element having a light-emitting unit, a transparent layer and a wavelength conversion layer formed on the transparent layer. The transparent layer covers the light-emitting unit. The wavelength conversion layer includes a phosphor layer having a phosphor and a stress release layer without the phosphor.Type: GrantFiled: July 17, 2019Date of Patent: June 7, 2022Assignee: EPISTAR CORPORATIONInventors: Ching-Tai Cheng, Ju-Lien Kuo, Min-Hsun Hsieh, Shau-Yi Chen, Shih-An Liao, Jhih-Hao Chen
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Patent number: 11355723Abstract: A light-emitting device includes a light-emitting element having a first electrode and a second electrode, a carrier, a first contact and a second contact. The first contact is arranged on the carrier and is electrically connected to the first electrode. The second contact is arranged on the carrier and is electrically connected to the second electrode. The first contact has a contour similar with that of the first electrode. The second contact has a contour similar with that of the second electrode.Type: GrantFiled: September 14, 2020Date of Patent: June 7, 2022Assignee: EPISTAR CORPORATIONInventors: Yih-Hua Renn, Shau-Yi Chen, Ching-Tai Cheng, Aurelien Gauthier-Brun
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Patent number: 11349047Abstract: This disclosure discloses a light-emitting device. The light-emitting device includes a light-emitting stack having a first-type semiconductor layer, a second-type semiconductor layer, and an active layer formed between the first-type semiconductor layer and the second-type semiconductor layer; and a reflective structure formed on the first-type semiconductor layer and having a first interface and a second interface. A critical angle at the first interface for a light emitted from the light-emitting stack is larger than that at the second interface. The reflective structure electrically connects to the first-type semiconductor layer at the first interface, and an area of the first interface is more than an area of the second interface in a top view.Type: GrantFiled: December 7, 2020Date of Patent: May 31, 2022Assignee: EPISTAR CORPORATIONInventors: Yi-Ming Chen, Hao-Min Ku, Chih-Chiang Lu, Tzu-Chieh Hsu
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Patent number: 11335826Abstract: A photo-detecting device includes a substrate, a first semiconductor layer, a light-absorbing layer, a second semiconductor layer, a semiconductor contact layer, an insulating layer, and an electrode structure. The second semiconductor layer includes a first region and a second region. The semiconductor contact layer is on the first region. The insulating layer covers the semiconductor contact layer, the first region, and the second region. The electrode structure covers the semiconductor contact layer, the insulating layer, the first region, and the second region.Type: GrantFiled: June 30, 2020Date of Patent: May 17, 2022Assignee: EPISTAR CORPORATIONInventors: Chu-Jih Su, Chao-Shun Huang, Shiuan-Leh Lin, Shih-Chang Lee, Wen-Luh Liao, Mei-Chun Liu
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Patent number: 11329195Abstract: A semiconductor light-emitting device includes a substrate; a first semiconductor layer and a second semiconductor layer formed on the substrate, wherein the first semiconductor layer includes a first exposed portion and a second portion; a plurality of first trenches formed on the substrate and including a surface composed by the first exposed portion; a second trench formed on the substrate and including a surface composed by the second exposed portion at a periphery region of the semiconductor light-emitting device, wherein each of the plurality of first trenches is branched from the second trench; and a patterned metal layer formed on the second semiconductor layer and including a first metal region and a second metal region, and portions of the second metal region are formed in the plurality of first trenches and the second trench to electrically connect to the first exposed portion and the second exposed portion.Type: GrantFiled: July 24, 2020Date of Patent: May 10, 2022Assignee: EPISTAR CORPORATIONInventors: Chao-Hsing Chen, Jia-Kuen Wang, Tzu-Yao Tseng, Tsung-Hsun Chiang, Bo-Jiun Hu, Wen-Hung Chuang, Yu-Ling Lin
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Patent number: 11313518Abstract: A light emitting apparatus includes a housing, a connector, a light source, a control module board, and an antenna. The housing includes an inner space. The light source is located in the inner space. The control module board is located in the connector, wherein an accommodation space is formed by the housing and the control module board. The antenna is located in the accommodation space.Type: GrantFiled: November 27, 2020Date of Patent: April 26, 2022Assignee: EPISTAR CORPORATIONInventors: Sheng-Bo Wang, Chang-Hsieh Wu, Yi-Chao Lin, Yao-Zhong Liu, Jai-Tai Kuo
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Patent number: 11309350Abstract: 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: GrantFiled: October 15, 2018Date of Patent: April 19, 2022Assignee: EPISTAR CORPORATIONInventors: Min Hsun Hsieh, Hsin-Mao Liu
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Patent number: RE49031Abstract: LED assemblies and related LED light bulbs. An LED assembly has a flexible, transparent substrate, an LED chip on the first surface and electrically connected to two adjacent conductive sections, a first wavelength conversion layer, formed on the first surface to substantially cover the LED chip, and a second wavelength conversion layer formed on the second surface. The flexible, transparent substrate has first and second surfaces opposite to each other, and several conductive sections, which are separately formed on the first surface.Type: GrantFiled: January 5, 2018Date of Patent: April 12, 2022Assignees: EPISTAR CORPORATION, KAISTAR LIGHTING (XIAMEN) CO., LTD.Inventors: Hong-Zhi Liu, Tzu-Chi Cheng