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    • 88. 发明授权
    • Laser-based display with position sensitive detector
    • 带位置敏感探测器的激光显示
    • US07232229B2
    • 2007-06-19
    • US11016062
    • 2004-12-17
    • Eric PeetersNoble M. JohnsonRoss D. Bringans
    • Eric PeetersNoble M. JohnsonRoss D. Bringans
    • G03B21/00G03B21/56
    • G03B21/60G03B21/14H04N9/3129
    • A display apparatus includes a luminescent screen having pixels formed from blue, green and red luminescent material that are selectively activated by a laser beam to generate a full color image. The display utilizes a closed loop laser scanning/modulating arrangement in which a Position Sensitive Device (PSD) located next to the screen is used to determine the location of the impinging beam, and to transmit timing/location data to the laser addressing system. The laser addressing system uses the timing/location data to adjust and/or modulate the laser beam, thereby generating high-energy beam pulses that activate the selected pixels. The PSD includes vertical strips located along the side edges of the screen, or a sheet that is located behind the screen and accessed, for example, by way of slits or apertures formed in the screen material. The PSD sheet is coupled to an optional power source to form a photon-multiplication device.
    • 显示装置包括具有由蓝色,绿色和红色发光材料形成的像素的荧光屏,其被激光束选择性地激活以产生全色图像。 显示器利用闭环激光扫描/调制装置,其中使用位于屏幕旁边的位置敏感装置(PSD)来确定入射光束的位置,并将定时/位置数据传送到激光寻址系统。 激光寻址系统使用定时/位置数据来调整和/或调制激光束,从而产生激活所选择的像素的高能量束脉冲。 PSD包括沿着屏幕的侧边缘定位的垂直条,或者位于屏幕后面的片材,例如通过形成在屏幕材料中的狭缝或孔进入。 PSD片材耦合到可选的电源以形成光子倍增装置。
    • 90. 再颁专利
    • Selective disordering of well structures by laser annealing
    • 通过激光退火对阱结构进行选择性排列
    • USRE33274E
    • 1990-07-24
    • US304671
    • 1989-01-31
    • Robert D. BurnhamNoble M. Johnson
    • Robert D. BurnhamNoble M. Johnson
    • H01L21/18H01L21/268
    • B82Y20/00H01L21/182H01L21/268
    • A method of converting selected areas of a semiconductor structure into a disordered alloy comprising a well feature epitaxially deposited on a semiconductor support, the well feature comprising at least one first well layer of narrow bandgap material deposited adjacent to at least a second layer of wider bandgap material or interposed between second and third layers of wider bandgap material. The disordered alloy exhibits higher bandgap and lower refractive index properties than the first layer. The method comprises the steps of (1) either placing the structure within a protective environment to prevent the escape of volatile components from the structure during subsequent processing or alternatively, covering the structure with a protective coating to prevent the escape of any elemental component of the structure, (2) heating the structure to a background temperature .[.just.]. below the temperature required to achieve rapid thermal disordering of the well feature, (3) scanning the structure with a laser beam while maintaining the applied heat to selectively disorder the well feature due to the additional heat supplied by the laser beam forming a pattern of wider bandgap and lower refractive index properties prescribed in the feature by the scanning trace of the laser beam compared to areas of the feature not scanned by the laser beam. The well feature may be a quantum well structure comprising a single quantum well structure, a multiple quantum well structure or a separate confinement single quantum well or a separate confinement multiple quantum well or a heterostructure including an active region being the first layer.