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    • 40. 发明授权
    • LED-based large area display
    • LED大面积显示屏
    • US08994056B2
    • 2015-03-31
    • US13941236
    • 2013-07-12
    • Intematix Corporation
    • Charles Edwards
    • G01L27/02H01L27/15G09F9/33B82Y20/00
    • H01L27/156B82Y20/00G09F9/33Y10S977/774Y10S977/95
    • An improved approach is described to implement an LED-based large area display which uses an array of single color solid state lighting elements (e.g. LEDs). In some embodiments, the panel comprises an array of blue LEDs, where each pixel of the array comprises three blue LEDs. An overlay is placed over the array of blue LEDs, where the overlay comprises a printed array of phosphor portions. Each pixel on the PCB comprised of three blue LEDs is matched to a corresponding portion of the overlay having the printed phosphor portions. The printed phosphor portions of the overlay includes a number of regions of blue light excitable phosphor materials that are configured to convert, by a process of photoluminescence, blue excitation light generated by the light sources into green or red and colored light. Regions of the overlay associated with generating blue light comprise an aperture/window that allows blue light to pass through the overlay.
    • 描述了一种改进的方法来实现使用单色固态照明元件(例如LED)的阵列的基于LED的大面积显示器。 在一些实施例中,面板包括蓝色LED阵列,阵列的每个像素包括三个蓝色LED。 覆盖层放置在蓝色LED阵列上,其中覆盖层包括印刷的荧光体部分阵列。 由三个蓝色LED组成的PCB上的每个像素与具有印刷的荧光体部分的覆盖层的相应部分相匹配。 覆盖层的印刷荧光体部分包括蓝光可激发荧光体材料的多个区域,其被配置为通过光致发光的过程将由光源产生的蓝色激发光转换成绿色或红色和有色光。 与生成蓝光相关联的覆盖区域包括允许蓝光穿过覆盖层的孔/窗口。