Full spectrum white light emitting devices

    公开(公告)号:US10685941B1

    公开(公告)日:2020-06-16

    申请号:US16517524

    申请日:2019-07-19

    Abstract: A full spectrum white light emitting device comprises: photoluminescence materials which generate light with a peak emission wavelength in a range from about 490 nm to about 680 nm; and a broadband solid-state excitation source operable to generate broadband excitation light with a dominant wavelength in a range from about 420 nm to about 480 nm. The device is operable to generate white light with a Correlated Color Temperature in a range from about 1800K to about 6800K, a CRI R9 less than 90, a spectrum whose intensity decreases from its maximum value in the orange to red region of the spectrum to about 50% of said maximum value at a wavelength in a range from about 645 nm to about 695 nm, and over a wavelength range from about 430 nm to about 520 nm, a maximum percentage intensity deviation of light emitted by the device is less than 60% from the intensity of light of at least one of a black-body curve and CIE Standard Illuminant D of the same Correlated Color Temperature.

    Color Liquid Crystal Displays and Display Backlights

    公开(公告)号:US20190227213A1

    公开(公告)日:2019-07-25

    申请号:US16090377

    申请日:2018-04-19

    Abstract: A display backlight, comprises: an excitation source, LED (146), for generating blue excitation light (148) with a peak emission wavelength in a wavelength range 445 nm to 465 nm; and a photoluminescence wavelength conversion layer (152). The photoluminescence wavelength conversion layer (152) comprises a mixture of a green-emitting photoluminescence material with a peak emission in a wavelength range 530 nm to 545 nm, a red-emitting photoluminescence material with a peak emission in a wavelength range 600 nm to 650 nm and particles of light scattering material.

    PHOTOLUMINESCENCE COLOR DISPLAY
    109.
    发明申请
    PHOTOLUMINESCENCE COLOR DISPLAY 审中-公开
    荧光色彩显示

    公开(公告)号:US20170023830A1

    公开(公告)日:2017-01-26

    申请号:US15078921

    申请日:2016-03-23

    CPC classification number: G02F1/133617 G02B5/201 G02F1/134336 G02F2202/108

    Abstract: A photoluminescence color display comprises a display panel that displays red, green and blue sub-pixel areas, an excitation source operable to generate excitation radiation for operating the display, and a combined layer of photoluminescence materials and filter pigments. The combined layer comprises at least one photoluminescence material, such as a phosphor material or quantum dots, that is operable to emit light corresponding to red, green and blue sub-pixel areas of the display in response to said excitation radiation.

    Abstract translation: 光致发光彩色显示器包括显示红色,绿色和蓝色子像素区域的显示面板,可操作以产生用于操作显示器的激发辐射的激发源,以及光致发光材料和滤光颜料的组合层。 组合层包括至少一种光致发光材料,例如磷光体材料或量子点,其可操作以响应于所述激发辐射发射对应于显示器的红色,绿色和蓝色子像素区域的光。

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