Light source device and projector

    公开(公告)号:US10989996B2

    公开(公告)日:2021-04-27

    申请号:US16765329

    申请日:2018-11-09

    摘要: A light source device that radiates excitation light or emitted light by the excitation light, includes: an excitation light source that radiates the excitation light; a fluorescent wheel that includes a phosphor, which emits light in a predetermined wavelength range on reception of the excitation light, in a circumferential direction; a driving device that rotates the fluorescent wheel; and a shielding member that is arranged around the excitation light source and the fluorescent wheel and shields the excitation light and the emitted light, wherein an opening through which outside air is introduced is provided at a part of the shielding member.

    Display device and manufacturing method for same

    公开(公告)号:US11309509B2

    公开(公告)日:2022-04-19

    申请号:US16981480

    申请日:2018-03-22

    IPC分类号: H01L51/50 H01L51/00

    摘要: A display device is provided with a light-emitting element layer including an anode electrode, a cathode electrode, and a quantum dot light-emitting layer sandwiched between the anode electrode and the cathode electrode, wherein the quantum dot light-emitting layer includes at least quantum dots and nanofibers. A method for manufacturing a display device includes forming a quantum dot light-emitting layer by applying a colloidal solution including at least quantum dots and nanofibers by ink-jet.

    Optical element and optical device

    公开(公告)号:US11506360B2

    公开(公告)日:2022-11-22

    申请号:US17287963

    申请日:2019-10-17

    摘要: Provided is compatibility between adhesion to a substrate (lower layer) and durability improvement. An optical element includes a phosphor layer facing a lower layer, and a bonding layer keeping the phosphor layer in intimate contact with the lower layer. The phosphor layer includes an inorganic binder, and phosphor particle dispersed with the inorganic binder. The bonding layer includes an organic binder. The phosphor layer has a first surface facing the lower layer, a second surface opposite to the first surface, and a side surface connecting the first and second surfaces together. The bonding layer connects together the second surface, the side surface, and a surface of the lower layer to keep the phosphor layer in intimate contact with the lower layer.

    Phosphor layer composition, phosphor member, light source device, and projection device

    公开(公告)号:US10920139B2

    公开(公告)日:2021-02-16

    申请号:US16626512

    申请日:2018-06-22

    摘要: A phosphor layer composition, phosphor member, light source device, and projection device are provided that are capable of restraining reflection or scattering at interfaces between phosphor particles and a binder to improve the excitation-light absorption by, and the external quantum efficiency of, the phosphor particles. The present invention, in an aspect thereof, is directed to a phosphor layer composition including: phosphor particles 111 absorbing excitation light and emitting prescribed fluorescence; and a binder 112 composed of a translucent gel containing a metal alkoxide or a mixture of a metal alkoxide and a metal oxide, wherein the phosphor particles 111 are dispersed in the binder 112, and the phosphor particles 111 and the binder 112 differ in refractive index by 0.3 or less.