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    • 21. 发明授权
    • Laser array
    • 激光阵列
    • US08259770B2
    • 2012-09-04
    • US12577201
    • 2009-10-11
    • Boaz TaganskyMichael PlotkinCraig Breen
    • Boaz TaganskyMichael PlotkinCraig Breen
    • H01S3/04H01S5/00B41J2/385B41J2/435G01D15/06G03G15/01
    • B41J2/45H01S5/042H01S5/4025
    • Electrophotographic print system, comprising a photosensitive medium, and a laser array being provided with a plurality of laser diodes arranged to emit light onto the photosensitive medium for varying an electrical potential on a surface of the photosensitive medium, and a plurality of heat dissipation diodes, each heat dissipation diode being arranged in proximity to a corresponding laser diode, wherein each laser diode and the corresponding heat dissipation diode are coupled to a common drive circuit and are arranged in opposite current flow directions with respect to each other, so that in use the current flows either through the laser diode or through the heat dissipation diode depending on the current flow direction in the drive circuit.
    • 电子照相打印系统,包括感光介质和激光阵列,其设置有多个激光二极管,所述多个激光二极管被布置成将光发射到感光介质上以改变感光介质的表面上的电位,以及多个散热二极管, 每个散热二极管布置在相应的激光二极管附近,其中每个激光二极管和相应的散热二极管耦合到公共驱动电路并且相对于彼此以相反的电流流动方向布置,使得在使用中 电流根据驱动电路中的电流流动方向通过激光二极管或通过散热二极管流动。
    • 23. 发明申请
    • Light emitting devices and displays with improved performance
    • 具有改进性能的发光器件和显示器
    • US20100051901A1
    • 2010-03-04
    • US12454705
    • 2009-05-21
    • Peter T. KazlasMarshall CoxSeth Coe-SullivanDorai RamprasadJonathan S. SteckelCraig BreenCaroline J. RoushMead Misic
    • Peter T. KazlasMarshall CoxSeth Coe-SullivanDorai RamprasadJonathan S. SteckelCraig BreenCaroline J. RoushMead Misic
    • H01L33/00
    • C09K11/565B82Y20/00B82Y30/00H01L51/5012H05B33/14
    • Light emitting devices and devices with improved performance are disclosed. In one embodiment, a light emitting device includes an emissive material disposed between a first electrode, and a second electrode, wherein the emissive material comprises semiconductor nanocrystals capable of emitting light including a maximum peak emission in the blue region of the spectrum upon excitation, wherein the light emitting device can have a peak external quantum efficiency of at least about 1.0 percent. Also disclosed is a display including at least one light emitting device including an emissive material disposed between a first electrode, and a second electrode, wherein the at least one light emitting device can have a peak external quantum efficiency of at least about 1.0 percent. In another embodiment, a light emitting device includes an emissive material disposed between a first electrode and a second electrode. The emissive material comprises semiconductor nanocrystals capable of emitting light including a maximum peak emission in the blue region of the spectrum upon excitation. The device further includes a first spacer material disposed between the emissive material and the first electrode. In certain embodiments, the device further includes a first material capable of transporting charge disposed between the emissive material and the first electrode, wherein the first spacer material is disposed between the emissive material and the first electrode. In certain embodiments, for example, light emitting devices can have a maximum peak emission in a range from about 380 nm to about 500 nm. In certain embodiments, the light emitting device can have a maximum peak emission peak in the range from about 450 nm to about 490 nm. Displays including light emitting devices are also disclosed.
    • 公开了具有改进性能的发光器件和器件。 在一个实施例中,发光器件包括设置在第一电极和第二电极之间的发光材料,其中发射材料包含能够发射包括在激发的光谱的蓝色区域中的最大峰值发射的光的半导体纳米晶体,其中 发光器件可以具有至少约1.0%的峰值外部量子效率。 还公开了一种显示器,其包括至少一个包括设置在第一电极和第二电极之间的发光材料的发光器件,其中所述至少一个发光器件可以具有至少约1.0%的峰值外部量子效率。 在另一个实施例中,发光器件包括设置在第一电极和第二电极之间的发光材料。 发射材料包括能够发射光的半导体纳米晶体,其包括在激发时在光谱的蓝色区域中的最大峰值发射。 该装置还包括设置在发光材料和第一电极之间的第一间隔物材料。 在某些实施例中,该装置还包括能够传输设置在发射材料和第一电极之间的电荷的第一材料,其中第一间隔物材料设置在发光材料和第一电极之间。 在某些实施例中,例如,发光器件可以具有在约380nm至约500nm范围内的最大峰值发射。 在某些实施方案中,发光器件可具有在约450nm至约490nm范围内的最大峰值发射峰值。 还公开了包括发光器件的显示器。
    • 24. 发明申请
    • Semiconductor nanocrystals and compositions and devices including same
    • US20100044636A1
    • 2010-02-25
    • US12454703
    • 2009-05-21
    • Dorai RamprasadCraig BreenJonathan S. Steckel
    • Dorai RamprasadCraig BreenJonathan S. Steckel
    • C09K11/54
    • H01L33/06B82Y20/00B82Y30/00C09K11/02C09K11/565C09K11/883H01L29/225H01L33/0029H01L33/28Y10S977/774Y10S977/95Y10T428/2991Y10T428/2993
    • A semiconductor nanocrystal including a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material, wherein the semiconductor nanocrystal is capable of emitting light with an improved photoluminescence quantum efficiency. Also disclosed are populations of semiconductor nanocrystals, compositions and devices including a semiconductor nanocrystal capable of emitting light with an improved photoluminescence quantum efficiency. In one embodiment, a semiconductor nanocrystal includes a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material, wherein the semiconductor nanocrystal is capable of emitting light upon excitation with a photoluminescence quantum efficiency greater than about 65%. In another embodiment, a semiconductor nanocrystal includes a core comprising a first semiconductor material comprising zinc, cadmium, and sulfur and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material. In a further embodiment, a semiconductor nanocrystal includes a core comprises a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material comprising at least three chemical elements, wherein the semiconductor nanocrystal is capable of emitting light with a photoluminescence quantum efficiency greater than about 60% upon excitation. In a further embodiment, a semiconductor nanocrystal including a core comprises a first semiconductor material comprising zinc, cadmium, and selenium and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material, wherein the semiconductor nanocrystal is capable of emitting light with a photoluminescence quantum efficiency greater than about 60% upon excitation.
    • 25. 发明申请
    • Skewing compensation method and apparatus in a laser based image-forming system
    • 基于激光的图像形成系统中的扭曲补偿方法和装置
    • US20070019059A1
    • 2007-01-25
    • US11187069
    • 2005-07-22
    • Craig BreenHaim LivneMichael Plotkin
    • Craig BreenHaim LivneMichael Plotkin
    • B41J2/435B41J2/385
    • B41J2/473G03G15/04072G03G15/55G03G2215/0404
    • Skew compensation apparatus for compensating for skew of a multi-beam scanning source, comprises: delay commencement detector(s) for detecting the start of a beam scanner position, position detectors for detecting the position of the multiple beams at a predefined interval following the commencement, so that the position indicates skew of the respective beam, and compensating electronics for automatically inserting a compensation for the skew by altering a delay into a timing signal for switching the respective beam. The commencement detector can be an existing start of scan detector and the apparatus can be built into the writing head, particularly at the conjugate location to the focal plane or at the focal plane of a laser printer or the like to provide a self-calibrating printer.
    • 用于补偿多光束扫描源的偏斜的偏斜补偿装置包括:用于检测光束扫描器位置的起始的延迟启动检测器,用于在开始之后的预定间隔检测多个光束的位置的位置检测器 ,使得该位置指示相应波束的偏斜,以及补偿电子装置,用于通过将延迟改变为用于切换相应波束的定时信号来自动插入对于偏斜的补偿。 启动检测器可以是扫描检测器的现有开始,并且该装置可以内置在写入头中,特别是在激光打印机等的焦平面或焦平面的共轭位置处,以提供自校准打印机 。
    • 27. 发明授权
    • Blue emitting semiconductor nanocrystals and compositions and devices including same
    • 蓝色发光半导体纳米晶体及其组成和装置,包括它们
    • US08404154B2
    • 2013-03-26
    • US12454701
    • 2009-05-21
    • Craig BreenJonathan S. SteckelDorai Ramprasad
    • Craig BreenJonathan S. SteckelDorai Ramprasad
    • C09K11/08
    • C09K11/883B82Y20/00B82Y30/00C09K11/02C09K11/025C09K11/0811C09K11/565C09K11/574H01L33/06Y10S428/917Y10T428/2991Y10T428/2993
    • A semiconductor nanocrystal capable of emitting blue light upon excitation. Also disclosed are devices, populations of semiconductor nanocrystals, and compositions including a semiconductor nanocrystal capable of emitting blue light upon excitation. In one embodiment, a semiconductor nanocrystal capable of emitting blue light including a maximum peak emission at a wavelength not greater than about 470 nm with a photoluminescence quantum efficiency greater than about 65% upon excitation. In another embodiment, a semiconductor nanocrystal includes a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material, wherein the semiconductor nanocrystal is capable of emitting blue light with a photoluminescence quantum efficiency greater than about 65% upon excitation. In a further embodiment, a semiconductor nanocrystal includes a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material comprising at least three chemical elements, wherein the semiconductor nanocrystal is capable of emitting light including a maximum peak emission in the blue region of the spectrum upon excitation.
    • 激发后能够发出蓝光的半导体纳米晶体。 还公开了半导体纳米晶体的器件,群体,以及包括在激发时能够发射蓝光的半导体纳米晶体的组合物。 在一个实施方案中,能够发射包括波长不大于约470nm的最大峰值发射的蓝光的半导体纳米晶体,其光致发光量子效率在激发时大于约65%。 在另一个实施例中,半导体纳米晶体包括芯,其包含包含至少三个化学元素的第一半导体材料和设置在芯的至少一部分上的壳,壳包括第二半导体材料,其中半导体纳米晶体能够发射 激发后光致发光量子效率大于约65%的蓝光。 在另一实施例中,半导体纳米晶体包括芯,其包括包含至少三个化学元件的第一半导体材料和设置在芯的至少一部分上的外壳,壳包括包含至少三个化学元素的第二半导体材料,其中 半导体纳米晶体在激发时能够发射包括光谱的蓝色区域中的最大峰值发射的光。
    • 28. 发明申请
    • Laser Array
    • 激光阵列
    • US20110085014A1
    • 2011-04-14
    • US12577201
    • 2009-10-11
    • Boaz TaganskyMichael PlotkinCraig Breen
    • Boaz TaganskyMichael PlotkinCraig Breen
    • B41J2/435H01S3/04
    • B41J2/45H01S5/042H01S5/4025
    • Electrophotographic print system, comprising a photosensitive medium, and a laser array being provided with a plurality of laser diodes arranged to emit light onto the photosensitive medium for varying an electrical potential on a surface of the photosensitive medium, and a plurality of heat dissipation diodes, each heat dissipation diode being arranged in proximity to a corresponding laser diode, wherein each laser diode and the corresponding heat dissipation diode are coupled to a common drive circuit and are arranged in opposite current flow directions with respect to each other, so that in use the current flows either through the laser diode or through the heat dissipation diode depending on the current flow direction in the drive circuit.
    • 电子照相打印系统,包括感光介质和激光阵列,其设置有多个激光二极管,所述多个激光二极管被布置成将光发射到感光介质上以改变感光介质的表面上的电位,以及多个散热二极管, 每个散热二极管布置在相应的激光二极管附近,其中每个激光二极管和相应的散热二极管耦合到公共驱动电路并且相对于彼此以相反的电流流动方向布置,使得在使用中 电流根据驱动电路中的电流流动方向通过激光二极管或通过散热二极管流动。