Patents by Inventor Chun-Hua SHIH
Chun-Hua SHIH 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: 10862011Abstract: A light-emitting device includes a light-emitting element and a wavelength conversion layer. The light-emitting element has a top surface, a bottom surface, a side surface, and a first electrical contact formed on the bottom surface. The distance between the top surface and the bottom surface has a first height (h1). The wavelength conversion layer has a first area (A1) located on the top surface of the light-emitting element and a second area (A2) located on the side surfaces and surrounding the first area. The first area has a second height (h2). The second area has a third height (h3) and a second width (w2). The second height (h2) is greater than the second width (w2). The difference of the third height and the sum of the first height and the second height is less than 15 ?m.Type: GrantFiled: September 9, 2016Date of Patent: December 8, 2020Assignee: EPISTAR CORPORATIONInventors: Yih-Hua Renn, Ching-Tai Cheng, Chun-Hua Shih
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Patent number: 10522721Abstract: A light-emitting device includes a light-emitting element, a wavelength conversion layer, a light pervious element and a light-reflecting enclosure. The light-emitting element includes a top surface, a bottom surface, and a side surface between the top surface and the bottom surface. The wavelength conversion layer covers the top surface of the light-emitting element, and includes a plurality of wavelength conversion particles having an equivalent particle diameter D50. The light pervious element includes a recess structure and an outer wall. The light-reflecting enclosure surrounds the outer wall. The D50 of the wavelength conversion particles is not great than 10 ?m. The recess structure is laterally overlapped with the side surface of the light-emitting element and the wavelength conversion layer.Type: GrantFiled: July 27, 2018Date of Patent: December 31, 2019Assignee: EPISTAR CORPORATIONInventors: Ching-Tai Cheng, Chun-Hua Shih, Yih-Hua Renn
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Patent number: 10312423Abstract: A light-emitting device includes a light-emitting element, a wavelength converting layer and a light-adjusting layer. The light-emitting element has a first upper surface, a bottom surface, and a lateral surface between the first upper surface and the bottom surface. The wavelength converting layer includes a plurality of wavelength converting particles, and has a second upper surface on the first upper surface. The light-adjusting layer surrounds the lateral surface and has a first composition or a second composition. The first composition includes a first binder and a plurality of first light-diffusing particles. The second composition includes a second binder, a plurality of second light-diffusing particles, and a plurality of light-scattering particles.Type: GrantFiled: August 17, 2017Date of Patent: June 4, 2019Assignee: EPISTAR CORPORATIONInventors: Ching-Tai Cheng, Lung-Kuan Lai, Ju-Lien Kuo, Chun-Hua Shih, Hsuan-Tzu Peng, Yih-Hua Renn
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Patent number: 10147852Abstract: A light-emitting device includes a light-emitting element, a cover layer, and an anti-adhesion layer. The light-emitting element has a top surface, a bottom surface and a side surface. The cover layer covers the light-emitting element and includes a first transparent binder. The anti-adhesion layer includes a flouro-resin or a fluoride compound and disposed on the cover layer and the top surface as an outermost layer of the light-emitting device. The anti-adhesion layer has a hardness greater than a hardness of the cover layer.Type: GrantFiled: January 8, 2018Date of Patent: December 4, 2018Assignee: EPISTAR CORPORATIONInventors: Ching-Tai Cheng, Yih-Hua Renn, Chun-Hua Shih
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Publication number: 20180337313Abstract: A light-emitting device includes a light-emitting element, a wavelength conversion layer, a light pervious element and a light-reflecting enclosure. The light-emitting element includes a top surface, a bottom surface, and a side surface between the top surface and the bottom surface. The wavelength conversion layer covers the top surface of the light-emitting element, and includes a plurality of wavelength conversion particles having an equivalent particle diameter D50. The light pervious element includes a recess structure and an outer wall. The light-reflecting enclosure surrounds the outer wall. The D50 of the wavelength conversion particles is not great than 10 ?m. The recess structure is laterally overlapped with the side surface of the light-emitting element and the wavelength conversion layer.Type: ApplicationFiled: July 27, 2018Publication date: November 22, 2018Inventors: Ching-Tai CHENG, Chun-Hua SHIH, Yih-Hua RENN
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Patent number: 10062816Abstract: A light-emitting device includes a light-emitting element, a wavelength conversion layer and a light pervious element. The light-emitting element includes a top surface, a bottom surface, a plurality of side surfaces connecting to the top surface and the bottom surface, and a first electrical contact formed on the bottom surface. The wavelength conversion layer covers the top surface of the light-emitting element to form a first thickness, has an average thickness, and includes a transparent binder and a plurality of wavelength conversion particles having an equivalent particle diameter D50. The light pervious element includes a light exiting surface and is disposed on the wavelength conversion layer. The D50 of the wavelength conversion particles is not great than 10 ?m. A ratio of the average thickness to the D50 of the wavelength conversion layer is ranged from 6 to 20.Type: GrantFiled: December 30, 2016Date of Patent: August 28, 2018Assignee: EPISTAR CORPORATIONInventors: Ching-Tai Cheng, Chun-Hua Shih, Yih-Hua Renn
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Publication number: 20180151783Abstract: A light-emitting device includes a light-emitting element, a cover layer, and an anti-adhesion layer. The light-emitting element has a top surface, a bottom surface and a side surface. The cover layer covers the light-emitting element and includes a first transparent binder. The anti-adhesion layer includes a flouro-resin or a fluoride compound and disposed on the cover layer and the top surface as an outermost layer of the light-emitting device. The anti-adhesion layer has a hardness greater than a hardness of the cover layer.Type: ApplicationFiled: January 8, 2018Publication date: May 31, 2018Inventors: Ching-Tai CHENG, Yih-Hua RENN, Chun-Hua SHIH
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Patent number: 9966502Abstract: A light-emitting device includes a light-emitting element, and a covering layer. The light-emitting element includes a top surface, a bottom surface, a light-emitting stack between the top surface and the bottom surface, and an adhesion enhancing layer surrounding the light-emitting stack. The covering layer covers the light-emitting element and contacts the adhesion enhancing layer. Moreover, the adhesion enhancing layer includes an oxide and a thickness greater than 5 nm and less than 1000 nm.Type: GrantFiled: April 1, 2016Date of Patent: May 8, 2018Assignee: EPISTAR CORPORATIONInventors: Ching-Tai Cheng, Yih-Hua Renn, Guan-Wu Chen, Chun-Hua Shih
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Publication number: 20180053882Abstract: A light-emitting device includes a light-emitting element, a wavelength converting layer and a light-adjusting layer. The light-emitting element has a first upper surface, a bottom surface, and a lateral surface between the first upper surface and the bottom surface. The wavelength converting layer includes a plurality of wavelength converting particles, and has a second upper surface on the first upper surface. The light-adjusting layer surrounds the lateral surface and has a first composition or a second composition. The first composition includes a first binder and a plurality of first light-diffusing particles. The second composition includes a second binder, a plurality of second light-diffusing particles, and a plurality of light-scattering particles.Type: ApplicationFiled: August 17, 2017Publication date: February 22, 2018Inventors: Ching-Tai CHENG, Lung-Kuan LAI, Ju-Lien KUO, Chun-Hua SHIH, Hsuan-Tzu PENG, Yih-Hua RENN
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Patent number: 9871174Abstract: A light-emitting device includes a light-emitting element, a cover layer, and an anti-adhesion layer. The light-emitting element has a top surface, a bottom surface and a first side surface. The cover layer covers the light-emitting element and includes a first transparent binder and a plurality of wavelength conversion particles dispersed within the first transparent binder. The anti-adhesion layer includes a fluoro-containing material, and is disposed on the cover layer and the top surface.Type: GrantFiled: December 4, 2015Date of Patent: January 16, 2018Assignee: Epistar CorporationInventors: Ching-Tai Cheng, Yih-Hua Renn, Chun-Hua Shih
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Publication number: 20170288095Abstract: A light-emitting device includes a light-emitting element, and a covering layer. The light-emitting element includes a top surface, a bottom surface, a light-emitting stack between the top surface and the bottom surface, and an adhesion enhancing layer surrounding the light-emitting stack. The covering layer covers the light-emitting element and contacts the adhesion enhancing layer. Moreover, the adhesion enhancing layer includes an oxide and a thickness greater than 5 nm and less than 1000 nm.Type: ApplicationFiled: April 1, 2016Publication date: October 5, 2017Inventors: Ching-Tai CHENG, Yih-Hua RENN, Guan-Wu CHEN, Chun-Hua SHIH
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Publication number: 20170222102Abstract: A light-emitting device includes a light-emitting element, a wavelength conversion layer and a light pervious element. The light-emitting element includes a top surface, a bottom surface, a plurality of side surfaces connecting to the top surface and the bottom surface, and a first electrical contact formed on the bottom surface. The wavelength conversion layer covers the top surface of the light-emitting element to form a first thickness, has an average thickness, and includes a transparent binder and a plurality of wavelength conversion particles having an equivalent particle diameter D50. The light pervious element includes a light exiting surface and is disposed on the wavelength conversion layer. The D50 of the wavelength conversion particles is not great than 10 ?m. A ratio of the average thickness to the D50 of the wavelength conversion layer is ranged from 6 to 20.Type: ApplicationFiled: December 30, 2016Publication date: August 3, 2017Inventors: Ching-Tai CHENG, Chun-Hua SHIH, Yih-Hua RENN
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Publication number: 20170162763Abstract: A light-emitting device includes a light-emitting element, a cover layer, and an anti-adhesion layer. The light-emitting element has a top surface, a bottom surface and a first side surface. The cover layer covers the light-emitting element and includes a first transparent binder and a plurality of wavelength conversion particles dispersed within the first transparent binder. The anti-adhesion layer includes a fluoro-containing material, and is disposed on the cover layer and the top surface.Type: ApplicationFiled: December 4, 2015Publication date: June 8, 2017Inventors: Ching-Tai CHENG, Yih-Hua RENN, Chun-Hua SHIH
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Publication number: 20170077364Abstract: A light-emitting device includes a light-emitting element and a wavelength conversion layer. The light-emitting element has a top surface, a bottom surface, a side surface, and a first electrical contact formed on the bottom surface. The distance between the top surface and the bottom surface has a first height (h1). The wavelength conversion layer has a first area (A1) located on the top surface of the light-emitting element and a second area (A2) located on the side surfaces and surrounding the first area. The first area has a second height (h2). The second area has a third height (h3) and a second width (w2). The second height (h2) is greater than the second width (w2). The difference of the third height and the sum of the first height and the second height is less than 15 ?m.Type: ApplicationFiled: September 9, 2016Publication date: March 16, 2017Inventors: Yih-Hua RENN, Ching-Tai CHENG, Chun-Hua SHIH