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    Light-emitting device and manufacturing method thereof
    1.
    发明授权
    Light-emitting device and manufacturing method thereof 有权

    公开(公告)号：US10312423B2

    公开(公告)日：2019-06-04

    申请号：US15679966

    申请日：2017-08-17

    Applicant: EPISTAR CORPORATION

    Inventor： Ching-Tai Cheng ,  Lung-Kuan Lai ,  Ju-Lien Kuo ,  Chun-Hua Shih ,  Hsuan-Tzu Peng ,  Yih-Hua Renn

    IPC: H01L33/50 ,  H01L33/58 ,  H01L33/60 ,  H01L33/62

    Abstract: 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.

    Light-emitting device with optimized viewing angle
    2.
    发明授权
    Light-emitting device with optimized viewing angle 有权

    公开(公告)号：US10862011B2

    公开(公告)日：2020-12-08

    申请号：US15260469

    申请日：2016-09-09

    Applicant: EPISTAR CORPORATION

    Inventor： Yih-Hua Renn ,  Ching-Tai Cheng ,  Chun-Hua Shih

    IPC: H01L33/40 ,  H01L33/50 ,  H01L33/62

    Abstract: 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 μm.

    Light-emitting device and manufacturing method thereof
    3.
    发明授权
    Light-emitting device and manufacturing method thereof 有权

    公开(公告)号：US10522721B2

    公开(公告)日：2019-12-31

    申请号：US16047734

    申请日：2018-07-27

    Applicant: EPISTAR CORPORATION

    Inventor： Ching-Tai Cheng ,  Chun-Hua Shih ,  Yih-Hua Renn

    IPC: H01L33/50 ,  H01L33/48 ,  H01L33/60 ,  H01L33/62

    Abstract: 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 μm. The recess structure is laterally overlapped with the side surface of the light-emitting element and the wavelength conversion layer.

    Light-emitting device and manufacturing method thereof
    4.
    发明授权
    Light-emitting device and manufacturing method thereof 有权

    公开(公告)号：US10062816B2

    公开(公告)日：2018-08-28

    申请号：US15395917

    申请日：2016-12-30

    Applicant: EPISTAR CORPORATION

    Inventor： Ching-Tai Cheng ,  Chun-Hua Shih ,  Yih-Hua Renn

    IPC: H01L33/00 ,  H01L33/50 ,  H01L33/62 ,  H01L33/60 ,  H01L33/48

    CPC classification number: H01L33/508 ,  H01L33/483 ,  H01L33/505 ,  H01L33/60 ,  H01L33/62 ,  H01L2933/0041

    Abstract: 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 μm. A ratio of the average thickness to the D50 of the wavelength conversion layer is ranged from 6 to 20.

    Light-emitting device
    6.
    发明授权
    Light-emitting device 有权

    公开(公告)号：US10147852B2

    公开(公告)日：2018-12-04

    申请号：US15864485

    申请日：2018-01-08

    Applicant: EPISTAR CORPORATION

    Inventor： Ching-Tai Cheng ,  Yih-Hua Renn ,  Chun-Hua Shih

    IPC: H01L33/52 ,  H01L33/50 ,  H01L33/58 ,  H01L33/44 ,  H01L33/60 ,  H01L33/62

    Abstract: 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.

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