Patents by Inventor Cheng-Lin LU
Cheng-Lin LU 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: 12230744Abstract: A light-emitting device includes a substrate including a top surface, a first side surface and a second side surface, wherein the first side surface and the second side surface of the substrate are respectively connected to two opposite sides of the top surface of the substrate; a semiconductor stack formed on the top surface of the substrate, the semiconductor stack including a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a first electrode pad formed adjacent to a first edge of the light-emitting device; and a second electrode pad formed adjacent to a second edge of the light-emitting device, wherein in a top view of the light-emitting device, the first edge and the second edge are formed on different sides or opposite sides of the light-emitting device, the first semiconductor layer adjacent to the first edge includes a first sidewall directly connected to the first side surface of the substrate,Type: GrantFiled: September 20, 2023Date of Patent: February 18, 2025Assignee: EPISTAR CORPORATIONInventors: Chao-Hsing Chen, Cheng-Lin Lu, Chih-Hao Chen, Chi-Shiang Hsu, I-Lun Ma, Meng-Hsiang Hong, Hsin-Ying Wang, Kuo-Ching Hung, Yi-Hung Lin
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Publication number: 20240395975Abstract: A light-emitting device includes a semiconductor structure including a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, wherein the second semiconductor layer includes a first edge; a reflective structure located on the second semiconductor layer and including an outer edge; a first electrode pad located on the reflective structure, wherein the first electrode pad including an outer side wall adjacent to the outer edge, wherein the outer edge extends beyond the outer side wall and does not exceed the first edge in a cross-sectional view of the light-emitting device.Type: ApplicationFiled: July 30, 2024Publication date: November 28, 2024Inventors: Chao-Hsing CHEN, Jia-Kuen WANG, Wen-Hung CHUANG, Tzu-Yao TSENG, Cheng-Lin LU
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Patent number: 12080831Abstract: A light-emitting device includes a semiconductor structure including a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, wherein the second semiconductor layer includes a first edge; a reflective structure located on the second semiconductor layer and including an outer edge; a first electrode pad located on the reflective structure, wherein the first electrode pad including an outer side wall adjacent to the outer edge, wherein the outer edge extends beyond the outer side wall and does not exceed the first edge in a cross-sectional view of the light-emitting device.Type: GrantFiled: June 21, 2023Date of Patent: September 3, 2024Assignee: EPISTAR CORPORATIONInventors: Chao-Hsing Chen, Jia-Kuen Wang, Wen-Hung Chuang, Tzu-Yao Tseng, Cheng-Lin Lu
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Publication number: 20240113262Abstract: A light-emitting device includes: a semiconductor stack, including a first semiconductor layer, an active region and a second semiconductor layer; a first contact electrode and a second contact electrode formed on the semiconductor stack, wherein the first contact electrode includes a first contact part formed on the first semiconductor layer and the second contact electrode includes a second contact part formed on the second semiconductor layer; an insulating stack formed on the semiconductor stack, including an opening on the second contact part; a first electrode pad and a second electrode pad formed on the insulating stack, wherein the second electrode pad filled in the opening and connecting the second contact part; wherein the second electrode pad includes an upper surface, and the upper surface includes a platform area and a depression area on the second contact part; wherein the platform area has a maximum height relative to other areas of the upper surface; wherein an area of a projection of the platType: ApplicationFiled: September 1, 2023Publication date: April 4, 2024Inventors: Hsin-Ying WANG, Hui-Chun YEH, Jhih-Yong YANG, Chen OU, Cheng-Lin LU
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Publication number: 20240014352Abstract: A light-emitting device includes a substrate including a top surface, a first side surface and a second side surface, wherein the first side surface and the second side surface of the substrate are respectively connected to two opposite sides of the top surface of the substrate; a semiconductor stack formed on the top surface of the substrate, the semiconductor stack including a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a first electrode pad formed adjacent to a first edge of the light-emitting device; and a second electrode pad formed adjacent to a second edge of the light-emitting device, wherein in a top view of the light-emitting device, the first edge and the second edge are formed on different sides or opposite sides of the light-emitting device, the first semiconductor layer adjacent to the first edge includes a first sidewall directly connected to the first side surface of the substrate,Type: ApplicationFiled: September 20, 2023Publication date: January 11, 2024Inventors: Chao-Hsing CHEN, Cheng-Lin LU, Chih-Hao CHEN, Chi-Shiang HSU, I-Lun MA, Meng-Hsiang HONG, Hsin-Ying WANG, Kuo-Ching HUNG, Yi-Hung LIN
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Patent number: 11799060Abstract: A light-emitting device includes a substrate including a top surface, a first side surface and a second side surface, wherein the first side surface and the second side surface of the substrate are respectively connected to two opposite sides of the top surface of the substrate; a semiconductor stack formed on the top surface of the substrate, the semiconductor stack including a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a first electrode pad formed adjacent to a first edge of the light-emitting device; and a second electrode pad formed adjacent to a second edge of the light-emitting device, wherein in a top view of the light-emitting device, the first edge and the second edge are formed on different sides or opposite sides of the light-emitting device, the first semiconductor layer adjacent to the first edge includes a first sidewall directly connected to the first side surface of the substrate,Type: GrantFiled: February 23, 2023Date of Patent: October 24, 2023Assignee: EPISTAR CORPORATIONInventors: Chao-Hsing Chen, Cheng-Lin Lu, Chih-Hao Chen, Chi-Shiang Hsu, I-Lun Ma, Meng-Hsiang Hong, Hsin-Ying Wang, Kuo-Ching Hung, Yi-Hung Lin
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Publication number: 20230335681Abstract: A light-emitting device includes a semiconductor structure including a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, wherein the second semiconductor layer includes a first edge; a reflective structure located on the second semiconductor layer and including an outer edge; a first electrode pad located on the reflective structure, wherein the first electrode pad including an outer side wall adjacent to the outer edge, wherein the outer edge extends beyond the outer side wall and does not exceed the first edge in a cross-sectional view of the light-emitting device.Type: ApplicationFiled: June 21, 2023Publication date: October 19, 2023Inventors: Chao-Hsing CHEN, Jia-Kuen WANG, Wen-Hung CHUANG, Tzu-Yao TSENG, Cheng-Lin LU
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Patent number: 11721791Abstract: A light-emitting device includes a semiconductor structure including a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, wherein the second semiconductor layer includes a first edge; a reflective structure located on the second semiconductor layer and including an outer edge; a first electrode pad located on the reflective structure, wherein the first electrode pad including an outer side wall adjacent to the outer edge, wherein the outer edge extends beyond the outer side wall and does not exceed the first edge in a cross-sectional view of the light-emitting device.Type: GrantFiled: February 2, 2021Date of Patent: August 8, 2023Assignee: EPISTAR CORPORATIONInventors: Chao-Hsing Chen, Jia-Kuen Wang, Wen-Hung Chuang, Tzu-Yao Tseng, Cheng-Lin Lu
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Publication number: 20230197904Abstract: A light-emitting device includes a substrate including a top surface, a first side surface and a second side surface, wherein the first side surface and the second side surface of the substrate are respectively connected to two opposite sides of the top surface of the substrate; a semiconductor stack formed on the top surface of the substrate, the semiconductor stack including a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a first electrode pad formed adjacent to a first edge of the light-emitting device; and a second electrode pad formed adjacent to a second edge of the light-emitting device, wherein in a top view of the light-emitting device, the first edge and the second edge are formed on different sides or opposite sides of the light-emitting device, the first semiconductor layer adjacent to the first edge includes a first sidewall directly connected to the first side surface of the substrate,Type: ApplicationFiled: February 23, 2023Publication date: June 22, 2023Inventors: Chao-Hsing CHEN, Cheng-Lin LU, Chih-Hao CHEN, Chi-Shiang HSU, I-Lun MA, Meng-Hsiang HONG, Hsin-Ying WANG, Kuo-Ching HUNG, Yi-Hung LIN
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Patent number: 11621374Abstract: A light-emitting device includes a substrate including a top surface, a first side surface and a second side surface, wherein the first side surface and the second side surface of the substrate are respectively connected to two opposite sides of the top surface of the substrate; a semiconductor stack formed on the top surface of the substrate, the semiconductor stack including a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a first electrode pad formed adjacent to a first edge of the light-emitting device; and a second electrode pad formed adjacent to a second edge of the light-emitting device, wherein in a top view of the light-emitting device, the first edge and the second edge are formed on different sides or opposite sides of the light-emitting device, the first semiconductor layer adjacent to the first edge includes a first sidewall directly connected to the first side surface of the substrate,Type: GrantFiled: May 14, 2021Date of Patent: April 4, 2023Assignee: EPISTAR CORPORATIONInventors: Chao-Hsing Chen, Cheng-Lin Lu, Chih-Hao Chen, Chi-Shiang Hsu, I-Lun Ma, Meng-Hsiang Hong, Hsin-Ying Wang, Kuo-Ching Hung, Yi-Hung Lin
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Publication number: 20210336090Abstract: A light-emitting device includes a semiconductor stack including a first semiconductor layer, a second semiconductor layer and an active area between the first semiconductor layer and the second semiconductor layer, wherein the first semiconductor layer including an upper surface; an exposed region formed in the semiconductor stack to expose the upper surface; a first protective layer covering the exposed region and a portion of the second semiconductor layer, wherein the first protective layer includes a first part with a first thickness formed on the upper surface and a second part with a second thickness formed on the second semiconductor layer, the first thickness is smaller than the second thickness; a first reflective structure formed on the second semiconductor layer and including one or multiple openings; and a second reflective structure formed on the first reflective structure and electrically connected to the second semiconductor layer through the one or multiple openings.Type: ApplicationFiled: April 22, 2021Publication date: October 28, 2021Inventors: Jhih-Yong YANG, Hsin-Ying WANG, De-Shan KUO, Chao-Hsing CHEN, Yi-Hung LIN, Meng-Hsiang HONG, Kuo-Ching HUNG, Cheng-Lin LU
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Publication number: 20210273137Abstract: A light-emitting device includes a substrate including a top surface, a first side surface and a second side surface, wherein the first side surface and the second side surface of the substrate are respectively connected to two opposite sides of the top surface of the substrate; a semiconductor stack formed on the top surface of the substrate, the semiconductor stack including a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a first electrode pad formed adjacent to a first edge of the light-emitting device; and a second electrode pad formed adjacent to a second edge of the light-emitting device, wherein in a top view of the light-emitting device, the first edge and the second edge are formed on different sides or opposite sides of the light-emitting device, the first semiconductor layer adjacent to the first edge includes a first sidewall directly connected to the first side surface of the substrate,Type: ApplicationFiled: May 14, 2021Publication date: September 2, 2021Inventors: Chao-Hsing CHEN, Cheng-Lin LU, Chih-Hao CHEN, Chi-Shiang HSU, I-Lun MA, Meng-Hsiang HONG, Hsin-Ying WANG, Kuo-Ching HUNG, Yi-Hung LIN
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Patent number: 11038085Abstract: A light-emitting device includes a substrate including a top surface, a first side surface and a second side surface, wherein the first side surface and the second side surface of the substrate are respectively connected to two opposite sides of the top surface of the substrate; a semiconductor stack formed on the top surface of the substrate, the semiconductor stack including a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a first electrode pad formed adjacent to a first edge of the light-emitting device; and a second electrode pad formed adjacent to a second edge of the light-emitting device, wherein in a top view of the light-emitting device, the first edge and the second edge are formed on different sides or opposite sides of the light-emitting device, the first semiconductor layer adjacent to the first edge includes a first sidewall directly connected to the first side surface of the substrate,Type: GrantFiled: August 1, 2019Date of Patent: June 15, 2021Assignee: EPISTAR CORPORATIONInventors: Chao-Hsing Chen, Cheng-Lin Lu, Chih-Hao Chen, Chi-Shiang Hsu, I-Lun Ma, Meng-Hsiang Hong, Hsin-Ying Wang, Kuo-Ching Hung, Yi-Hung Lin
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Publication number: 20210159366Abstract: A light-emitting device includes a semiconductor structure including a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, wherein the second semiconductor layer includes a first edge; a reflective structure located on the second semiconductor layer and including an outer edge; a first electrode pad located on the reflective structure, wherein the first electrode pad including an outer side wall adjacent to the outer edge, wherein the outer edge extends beyond the outer side wall and does not exceed the first edge in a cross-sectional view of the light-emitting device.Type: ApplicationFiled: February 2, 2021Publication date: May 27, 2021Inventors: Chao-Hsing CHEN, Jia-Kuen WANG, Wen-Hung CHUANG, Tzu-Yao TSENG, Cheng-Lin LU
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Patent number: 10950758Abstract: A light-emitting device comprises a semiconductor structure comprising a surface and a side wall inclined to the surface, wherein the semiconductor structure comprises a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, and the second semiconductor layer comprises a first edge and a first area; a reflective layer located on the second semiconductor layer and comprising an outer edge and a second area, wherein a distance between the first edge and the outer edge is greater than 0 ?m and is not greater than 10 ?m; and a first contact part comprising a metal formed on the reflective layer and the first semiconductor layer, wherein the first contact part comprises a first periphery comprising a first periphery length larger than a periphery length of the active layer from a top-view of the light-emitting device.Type: GrantFiled: May 19, 2020Date of Patent: March 16, 2021Assignee: Epistar CorporationInventors: Chao-Hsing Chen, Jia-Kuen Wang, Wen-Hung Chuang, Tzu-Yao Tseng, Cheng-Lin Lu
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Publication number: 20200279976Abstract: A light-emitting device comprises a semiconductor structure comprising a surface and a side wall inclined to the surface, wherein the semiconductor structure comprises a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, and the second semiconductor layer comprises a first edge and a first area; a reflective layer located on the second semiconductor layer and comprising an outer edge and a second area, wherein a distance between the first edge and the outer edge is greater than 0 ?m and is not greater than 10 ?m; and a first contact part comprising a metal formed on the reflective layer and the first semiconductor layer, wherein the first contact part comprises a first periphery comprising a first periphery length larger than a periphery length of the active layer from a top-view of the light-emitting device.Type: ApplicationFiled: May 19, 2020Publication date: September 3, 2020Inventors: Chao-Hsing CHEN, Jia-Kuen WANG, Wen-Hung CHUANG, Tzu-Yao TSENG, Cheng-Lin LU
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Patent number: 10680136Abstract: A light-emitting device comprises a semiconductor structure comprising a surface and a side wall inclined to the surface, wherein the semiconductor structure comprises a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, and the second semiconductor layer comprises a first edge and a first area; a reflective layer located on the second semiconductor layer and comprising an outer edge and a second area, wherein a distance between the first edge and the outer edge is greater than 0 ?m and is not greater than 10 ?m; and a first contact part comprising a metal formed on the reflective layer and the first semiconductor layer, wherein the first contact part comprises a first periphery comprising a first periphery length larger than a periphery length of the active layer from a top-view of the light-emitting device.Type: GrantFiled: May 20, 2019Date of Patent: June 9, 2020Assignee: EPISTAR CORPORATIONInventors: Chao-Hsing Chen, Jia-Kuen Wang, Wen-Hung Chuang, Tzu-Yao Tseng, Cheng-Lin Lu
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Patent number: 10651344Abstract: A light-emitting device includes a semiconductor structure including a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a surrounding part surrounding the semiconductor structure and exposing a surface of the first semiconductor layer; a first insulating structure formed on the semiconductor structure, including a plurality of protrusions covering the surface of the first semiconductor layer and a plurality of recesses exposing the surface of the first semiconductor layer; a first contact portion formed on the surrounding part and contacting the surface of the first semiconductor layer by the plurality of recesses; a first pad formed on the semiconductor structure; and a second pad formed on the semiconductor structure.Type: GrantFiled: January 14, 2019Date of Patent: May 12, 2020Assignee: EPISTAR CORPORATIONInventors: Chao-Hsing Chen, Jia-Kuen Wang, Tzu-Yao Tseng, Wen-Hung Chuang, Cheng-Lin Lu
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Publication number: 20200044116Abstract: A light-emitting device includes a substrate including a top surface, a first side surface and a second side surface, wherein the first side surface and the second side surface of the substrate are respectively connected to two opposite sides of the top surface of the substrate; a semiconductor stack formed on the top surface of the substrate, the semiconductor stack including a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a first electrode pad formed adjacent to a first edge of the light-emitting device; and a second electrode pad formed adjacent to a second edge of the light-emitting device, wherein in a top view of the light-emitting device, the first edge and the second edge are formed on different sides or opposite sides of the light-emitting device, the first semiconductor layer adjacent to the first edge includes a first sidewall directly connected to the first side surface of the substrate,Type: ApplicationFiled: August 1, 2019Publication date: February 6, 2020Inventors: Chao-Hsing CHEN, Cheng-Lin LU, Chih-Hao CHEN, Chi-Shiang HSU, I-Lun MA, Meng-Hsiang HONG, Hsin-Ying WANG, Kuo-Ching HUNG, Yi-Hung LIN
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Publication number: 20190273186Abstract: A light-emitting device comprises a semiconductor structure comprising a surface and a side wall inclined to the surface, wherein the semiconductor structure comprises a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, and the second semiconductor layer comprises a first edge and a first area; a reflective layer located on the second semiconductor layer and comprising an outer edge and a second area, wherein a distance between the first edge and the outer edge is greater than 0 ?m and is not greater than 10 ?m; and a first contact part comprising a metal formed on the reflective layer and the first semiconductor layer, wherein the first contact part comprises a first periphery comprising a first periphery length larger than a periphery length of the active layer from a top-view of the light-emitting device.Type: ApplicationFiled: May 20, 2019Publication date: September 5, 2019Inventors: Chao-Hsing CHEN, Jia-Kuen WANG, Wen-Hung CHUANG, Tzu-Yao TSENG, Cheng-Lin LU