Reflective color display
    75.
    发明授权
    Reflective color display 有权
    反光颜色显示

    公开(公告)号:US08982446B2

    公开(公告)日:2015-03-17

    申请号:US14095526

    申请日:2013-12-03

    Inventor: William J. Ray

    Abstract: A reflective color display is disclosed. A substrate supports a first conductor layer and pixel wells. A piezoelectric segment is formed in each pixel well over the first conductor layer. A second conductor layer overlies the piezoelectric segments, wherein an electric field created across any piezoelectric segment causes the piezoelectric segment to expand or contract under control of the electric field. A Bragg reflector segment overlies each piezoelectric segment and is compressible by expansion of the underlying piezoelectric segment. A white light LED layer overlies the Bragg reflector segments. By varying the electric field across each piezoelectric segment, the overlying Bragg reflector segment is controlled to reflect a selected wavelength for each pixel of the display. The walls of the pixel wells provide acoustic isolation between adjacent pixel wells. An acoustic membrane isolates the Bragg reflector segment from high frequency vibrations of the piezoelectric segment.

    Abstract translation: 公开了一种反射彩色显示器。 衬底支撑第一导体层和像素阱。 在每个像素中在第一导体层上形成压电段。 第二导体层覆盖在压电段上,其中跨越任何压电段产生的电场使压电段在电场的控制下膨胀或收缩。 布拉格反射器部分覆盖每个压电段,并且可通过下面的压电段的膨胀来压缩。 白光LED层叠在布拉格反射器部分上。 通过改变跨越每个压电段的电场,控制上覆布拉格反射器段以反映显示器每个像素的选定波长。 像素孔的壁提供相邻像素孔之间的声学​​隔离。 声膜将布拉格反射器段与压电段的高频振动隔离开。

    LED lamp using blue and cyan LEDs and a phosphor
    76.
    发明授权
    LED lamp using blue and cyan LEDs and a phosphor 有权
    LED灯采用蓝色和青色LED和荧光粉

    公开(公告)号:US08963168B1

    公开(公告)日:2015-02-24

    申请号:US14542192

    申请日:2014-11-14

    Inventor: Reuben Rettke

    CPC classification number: H01L25/0753 H01L33/502 H01L2924/0002 H01L2924/00

    Abstract: Many thousands of micro-LEDs (e.g., 25 microns per side) are deposited on a substrate. Some of the LEDs are formed to emit a peak wavelength of 450 nm (blue), and some are formed to emit a peak wavelength of 490 nm (cyan). A YAG (yellow) phosphor is then deposited on the LEDs, or a remote YAG layer is used. YAG phosphor is most efficiently excited at 450 nm and has a very weak emission at 490 nm. The two types of LEDs are GaN based and can be driven at the same current. The ratio of the two types of LEDs is controlled to achieve the desired overall color emission of the LED lamp. The blue LEDs optimally excite the YAG phosphor to produce white light having blue and yellow components, and the cyan LEDs broaden the emission spectrum to increase the CRI of the lamp while improving luminous efficiency. Other embodiments are described.

    Abstract translation: 数千个微型LED(例如每侧25微米)沉积在衬底上。 一些LED形成为发射450nm(蓝色)的峰值波长,并且一些形成为发射490nm(青色)的峰值波长。 然后将YAG(黄色)磷光体沉积在LED上,或者使用远程YAG层。 YAG荧光粉在450nm处最有效地被激发,并且在490nm处具有非常弱的发射。 两种类型的LED是基于GaN的,并且可以以相同的电流驱动。 控制两种类型的LED的比率以实现LED灯的期望的总体颜色发射。 蓝色LED最佳地激发YAG荧光粉以产生具有蓝色和黄色分量的白光,并且青色LED扩大发射光谱以增加灯的CRI,同时提高发光效率。 描述其他实施例。

    LED lamp using blue and cyan LEDs and a phosphor
    77.
    发明授权
    LED lamp using blue and cyan LEDs and a phosphor 有权
    LED灯采用蓝色和青色LED和荧光粉

    公开(公告)号:US08906713B2

    公开(公告)日:2014-12-09

    申请号:US13436613

    申请日:2012-03-30

    Applicant: Reuben Rettke

    Inventor: Reuben Rettke

    CPC classification number: H01L25/0753 H01L33/502 H01L2924/0002 H01L2924/00

    Abstract: Many thousands of micro-LEDs (e.g., 25 microns per side) are deposited on a substrate. Some of the LEDs are formed to emit a peak wavelength of 450 nm (blue), and some are formed to emit a peak wavelength of 490 nm (cyan). A YAG (yellow) phosphor is then deposited on the LEDs, or a remote YAG layer is used. YAG phosphor is most efficiently excited at 450 nm and has a very weak emission at 490 nm. The two types of LEDs are GaN based and can be driven at the same current. The ratio of the two types of LEDs is controlled to achieve the desired overall color emission of the LED lamp. The blue LEDs optimally excite the YAG phosphor to produce white light having blue and yellow components, and the cyan LEDs broaden the emission spectrum to increase the CRI of the lamp while improving luminous efficiency. Other embodiments are described.

    Abstract translation: 数千个微型LED(例如每侧25微米)沉积在衬底上。 一些LED形成为发射450nm(蓝色)的峰值波长,并且一些形成为发射490nm(青色)的峰值波长。 然后将YAG(黄色)磷光体沉积在LED上,或者使用远程YAG层。 YAG荧光粉在450nm处最有效地被激发,并且在490nm处具有非常弱的发射。 两种类型的LED是基于GaN的,并且可以以相同的电流驱动。 控制两种类型的LED的比率以实现LED灯的期望的总体颜色发射。 蓝色LED最佳地激发YAG荧光粉以产生具有蓝色和黄色分量的白光,并且青色LED扩大发射光谱以增加灯的CRI,同时提高发光效率。 描述其他实施例。

    VERTICALLY PRINTING LEDS IN SERIES
    79.
    发明申请
    VERTICALLY PRINTING LEDS IN SERIES 有权
    垂直印刷LED系列

    公开(公告)号:US20140209936A1

    公开(公告)日:2014-07-31

    申请号:US14150199

    申请日:2014-01-08

    Abstract: A first layer of first vertical light emitting diodes (VLEDs) is printed on a conductor surface. A first transparent conductor layer is deposited over the first VLEDs to electrically contact top electrodes of the first VLEDs. A second layer of second VLEDs is printed on the first transparent conductor layer. Since the VLEDs are printed as an ink, the second VLEDs are not vertically aligned with the first VLEDs, so light from the first VLEDs is not substantially blocked by the second VLEDs when the VLEDs are turned on. A second transparent conductor layer is deposited over the second VLEDs to electrically contact top electrodes of the second VLEDs. By this structure, the first VLEDs are connected in parallel, the second VLEDs are connected in parallel, and the first layer of first VLEDs and the second layer of second VLEDs are connected in series by the first transparent conductor layer.

    Abstract translation: 第一层第一垂直发光二极管(VLED)印在导体表面上。 在第一VLED上沉积第一透明导体层以电接触第一VLED的顶部电极。 在第一透明导体层上印刷第二层第二VLED。 由于VLED被印刷为墨水,所以第二VLED不与第一VLED垂直对准,因此当VLED被打开时,来自第一VLED的光基本上被第二VLED阻挡。 在第二VLED上沉积第二透明导体层以电接触第二VLED的顶部电极。 通过这种结构,第一VLED并联连接,第二VLED并联连接,第一VLED的第一层和第二VLED的第二层通过第一透明导体层串联连接。

    Phosphor layer containing transparent particles over blue LED
    80.
    发明授权
    Phosphor layer containing transparent particles over blue LED 有权
    含有蓝色LED的透明颗粒的荧光体层

    公开(公告)号:US08772814B2

    公开(公告)日:2014-07-08

    申请号:US13906751

    申请日:2013-05-31

    Abstract: LED dies are suspended in an ink and printed on a first support substrate to form a light emitting layer having a light emitting surface emitting primary light, such as blue light. A mixture of a transparent binder, phosphor powder, and transparent glass beads is formed as an ink and printed over the light emitting surface. The mixture forms a wavelength conversion layer when cured. The beads are preferably sized so that the tops of the beads protrude completely through the conversion layer. Some of the primary light passes through the beads with virtually no attenuation or backscattering, and some of the primary light is converted by the phosphor to secondary light. The combination of the secondary light and the primary light passing though the beads may form white light. The overall color is highly controllable by controlling the percentage weight of the beads.

    Abstract translation: LED芯片悬挂在墨水中并印刷在第一支撑基板上以形成具有发射初级光的发光表面的发光层,例如蓝色光。 形成透明粘合剂,荧光体粉末和透明玻璃珠的混合物作为墨水并印刷在发光表面上。 混合物在固化时形成波长转换层。 珠子的尺寸优选使得珠的顶部完全突出通过转换层。 一些初级光通过珠子几乎没有衰减或反向散射,并且一些初级光被磷光体转换成二次光。 二次光和通过珠的初级光的组合可以形成白光。 通过控制珠子的重量百分比,整体颜色是高度可控的。

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