Patents by Inventor Hui-Ching Feng
Hui-Ching Feng 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: 10658547Abstract: A light emitting diode (LED) structure including a stacked semiconductor layer, a contact layer and a dielectric reflective layer is provided. The stacked semiconductor layer includes a first type doped layer, a second type doped layer and an active layer disposed between the first type doped layer and the second type doped layer, wherein the first type doped layer, the active layer and the second type doped layer are penetrated by a plurality of recesses. The contact layer is disposed on the second type doped layer. The dielectric reflective layer is disposed on the contact layer and extended into the recesses to connect the contact layer and the first type doped layer with a coverage rate equal to or less than 60% from a top view of the LED structure.Type: GrantFiled: August 1, 2018Date of Patent: May 19, 2020Assignee: Epistar CorporationInventors: Cheng-Kuang Yang, Hui-Ching Feng, Chien-Pin Hsu, Kuo-Hui Yu, Shyi-Ming Pan
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Publication number: 20180342650Abstract: A light emitting diode (LED) structure including a stacked semiconductor layer, a contact layer and a dielectric reflective layer is provided. The stacked semiconductor layer includes a first type doped layer, a second type doped layer and an active layer disposed between the first type doped layer and the second type doped layer, wherein the first type doped layer, the active layer and the second type doped layer are penetrated by a plurality of recesses. The contact layer is disposed on the second type doped layer. The dielectric reflective layer is disposed on the contact layer and extended into the recesses to connect the contact layer and the first type doped layer with a coverage rate equal to or less than 60% from a top view of the LED structure.Type: ApplicationFiled: August 1, 2018Publication date: November 29, 2018Inventors: Cheng-Kuang Yang, Hui-Ching Feng, Chien-Pin Hsu, Kuo-Hui Yu, Shyi-Ming Pan
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Patent number: 10074777Abstract: A light emitting diode (LED) structure including a stacked semiconductor layer, a contact layer and a dielectric reflective layer is provided. The stacked semiconductor layer includes a first type doped layer, a second type doped layer and an active layer disposed between the first type doped layer and the second type doped layer, wherein the first type doped layer, the active layer and the second type doped layer are penetrated by a plurality of recesses. The contact layer is disposed on the second type doped layer. The dielectric reflective layer is disposed on the contact layer and extended into the recesses to connect the contact layer and the first type doped layer with a coverage rate equal to or less than 60% from a top view of the LED structure.Type: GrantFiled: August 27, 2014Date of Patent: September 11, 2018Assignee: Epistar CorporationInventors: Cheng-Kuang Yang, Hui-Ching Feng, Chien-Pin Hsu, Kuo-Hui Yu, Shyi-Ming Pan
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Publication number: 20160064617Abstract: A light emitting diode (LED) structure including a stacked semiconductor layer, a contact layer and a dielectric reflective layer is provided. The stacked semiconductor layer includes a first type doped layer, a second type doped layer and an active layer disposed between the first type doped layer and the second type doped layer, wherein the first type doped layer, the active layer and the second type doped layer are penetrated by a plurality of recesses. The contact layer is disposed on the second type doped layer. The dielectric reflective layer is disposed on the contact layer and extended into the recesses to connect the contact layer and the first type doped layer with a coverage rate equal to or less than 60% from a top view of the LED structure.Type: ApplicationFiled: August 27, 2014Publication date: March 3, 2016Inventors: Cheng-Kuang Yang, Hui-Ching Feng, Chien-Pin Hsu, Kuo-Hui Yu, Shyi-Ming Pan
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Patent number: 8933469Abstract: The present invention relates to a high-voltage light-emitting device suitable for light-emitting diode chip array module. The device comprises a set of light emitting diode chips, about 18˜25 chips, deposited on a substrate by using a non-matrix arrangement. Through the adjustments, the high-voltage light-emitting device of the present invention has optimized luminous efficiency.Type: GrantFiled: October 19, 2012Date of Patent: January 13, 2015Assignee: Formosa Epitaxy IncorporationInventors: Hui-Ching Feng, Chen-Hong Lee, Wei-Kang Cheng, Shyi-Ming Pan
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Patent number: 8314432Abstract: The present invention is related to a light emitting device with an insulating layer, which comprises a transparent substrate, a first light emitting unit, a second light emitting unit, an insulating layer and a conducting layer. The first light emitting unit and the second light emitting unit are set up on the transparent substrate, wherein the second light emitting unit has an appearance of a stair structure. The insulating layer is set between the first and the second light emitting units. The conducting layer is on the insulating layer in order to conduct the first and the second light emitting units. Because of the appearance of the stair structure of the second light emitting unit, improving the cladding efficiency of the insulating layer, further improving the insulating efficiency of the insulating layer and avoiding the insulating layer loosing and the leakage between the first and the second light emitting units.Type: GrantFiled: January 6, 2009Date of Patent: November 20, 2012Assignee: Formosa Epitaxy IncorporationInventors: Hui Ching Feng, Kuo-Chin Huang, Shyi-Ming Pan, Hung-Li Pan, Yin-Cheng Chu
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Patent number: 7956365Abstract: An alternating current (AC) light emitting device is revealed. The AC light emitting device includes a substrate and a plurality of light emitting units arranged on the substrate. The light emitting unit consists of a first semiconductor layer, a light emitting layer, a second semiconductor layer, at least one electrode and at least one second electrode respectively arranged on the first semiconductor layer and the second semiconductor layer from bottom to top. The plurality of light emitting units is coupled to at least one adjacent light emitting unit by a plurality of conductors. By the plurality of conductors that connect light emitting units with at least one adjacent light emitting unit, an open circuit will not occur in the AC light emitting device once one of the conductors is broken.Type: GrantFiled: December 8, 2008Date of Patent: June 7, 2011Assignee: Formosa Epitaxy IncorporationInventors: Hui Ching Feng, Kuo-Chin Huang, Shyi-Ming Pan, Hung-Li Pan
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Publication number: 20100052494Abstract: An alternating current (AC) light emitting device is revealed. The AC light emitting device includes a substrate and a plurality of light emitting units arranged on the substrate. The light emitting unit consists of a first semiconductor layer, a light emitting layer, a second semiconductor layer, at least one electrode and at least one second electrode respectively arranged on the first semiconductor layer and the second semiconductor layer from bottom to top. The plurality of light emitting units is coupled to at least one adjacent light emitting unit by a plurality of conductors. By the plurality of conductors that connect light emitting units with at least one adjacent light emitting unit, an open circuit will not occur in the AC light emitting device once one of the conductors is broken.Type: ApplicationFiled: December 8, 2008Publication date: March 4, 2010Inventors: Hui Ching FENG, Kuo-Chin Huang, Shyi-Ming Pan, Hung-Li Pan
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Publication number: 20100032690Abstract: The present invention is related to a light emitting device with an insulating layer, which comprises a transparent substrate, a first light emitting unit, a second light emitting unit, an insulating layer and a conducting layer. The first light emitting unit and the second light emitting unit are set up on the transparent substrate, wherein the second light emitting unit has an appearance of a stair structure. The insulating layer is set between the first and the second light emitting units. The conducting layer is on the insulating layer in order to conduct the first and the second light emitting units. Because of the appearance of the stair structure of the second light emitting unit, improving the cladding efficiency of the insulating layer, further improving the insulating efficiency of the insulating layer and avoiding the insulating layer loosing and the leakage between the first and the second light emitting units.Type: ApplicationFiled: January 6, 2009Publication date: February 11, 2010Inventors: Hui Ching Feng, Kuo-Chin Huang, Shyi-Ming Pan, Hung-Li Pan, Yin-Cheng Chu
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Patent number: 7462868Abstract: An LED chip with double close-loop electrode design includes a substrate, a first-type doped semiconductor layer, a light emitting layer, a second-type doped semiconductor layer, a first electrode and a second electrode. The first-type doped semiconductor layer is disposed on the substrate, the light emitting layer is disposed on the first-type doped semiconductor layer and the second-type doped semiconductor layer is disposed on the light emitting layer. The first electrode, disposed on the first-type doped semiconductor layer, has a close-loop pattern. The second electrode, disposed on the second-type doped semiconductor layer, is located inside a region encircled by the first electrode and has a close-loop pattern. In this way, the LED chip with double close-loop electrode design is able to avoid deteriorated luminous efficiency caused by broken electrodes.Type: GrantFiled: February 26, 2006Date of Patent: December 9, 2008Assignee: Formosa Epitaxy IncorporationInventors: Yun-Li Li, Hui-Ching Feng
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Publication number: 20070200120Abstract: An LED chip with double close-loop electrode design includes a substrate, a first-type doped semiconductor layer, a light emitting layer, a second-type doped semiconductor layer, a first electrode and a second electrode. The first-type doped semiconductor layer is disposed on the substrate, the light emitting layer is disposed on the first-type doped semiconductor layer and the second-type doped semiconductor layer is disposed on the light emitting layer. The first electrode, disposed on the first-type doped semiconductor layer, has a close-loop pattern. The second electrode, disposed on the second-type doped semiconductor layer, is located inside a region encircled by the first electrode and has a close-loop pattern. In this way, the LED chip with double close-loop electrode design is able to avoid deteriorated luminous efficiency caused by broken electrodes.Type: ApplicationFiled: February 26, 2006Publication date: August 30, 2007Inventors: Yun-Li Li, Hui-Ching Feng
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Patent number: D745472Type: GrantFiled: April 30, 2014Date of Patent: December 15, 2015Assignee: Formosa Epitaxy IncorporationInventor: Hui-Ching Feng
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Patent number: D745473Type: GrantFiled: April 30, 2014Date of Patent: December 15, 2015Assignee: Formosa Epitaxy IncorporationInventor: Hui-Ching Feng
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Patent number: D745474Type: GrantFiled: May 5, 2014Date of Patent: December 15, 2015Assignee: Formosa Epitaxy IncorporationInventor: Hui-Ching Feng
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Patent number: D745475Type: GrantFiled: May 5, 2014Date of Patent: December 15, 2015Assignee: Formosa Epitaxy IncorporationInventor: Hui-Ching Feng
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Patent number: D754619Type: GrantFiled: May 5, 2014Date of Patent: April 26, 2016Assignee: Formosa Epitaxy IncorporationInventor: Hui-Ching Feng
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Patent number: D755135Type: GrantFiled: May 5, 2014Date of Patent: May 3, 2016Assignee: Formosa Epitaxy IncorporationInventor: Hui-Ching Feng
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Patent number: D757663Type: GrantFiled: May 5, 2014Date of Patent: May 31, 2016Assignee: Formosa Epitaxy IncorporationInventor: Hui-Ching Feng
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Patent number: D760178Type: GrantFiled: April 30, 2014Date of Patent: June 28, 2016Assignee: Formosa Epitaxy IncorporationInventor: Hui-Ching Feng