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    • 9. 发明申请
    • Startup control method of brushless DC motor
    • 无刷直流电机启动控制方法
    • US20060132075A1
    • 2006-06-22
    • US11183956
    • 2005-07-19
    • Kwang LeeDae KimSang LeeHyen Choi
    • Kwang LeeDae KimSang LeeHyen Choi
    • H02P7/06
    • H02P6/20H02P6/182
    • A startup control method of a BLDC motor is disclosed. The method can control the BLDC motor to prevent the generation of a transient current such that the vibration of the BLDC motor can be reduced at the startup stage and perform a stable conversion into a senseless operation mode such that the startup failure rate of the BLDC motor can be reduced. The startup control method includes commutating a current applied to stator windings according to a rotor position. The method of operating the BLDC motor includes a rotor position that is forcibly aligned and so that phase commutation is performed, a back-electromotive force (back- emf) is detected from a lead voltage of a phase of a voltage which is not applied thereto after performing phase commutation and a determination is performed as to whether the detected back-emf is in a rising interval. The lead voltage of the phase of the voltage which is not applied thereto is integrated, such that if the back-emf is in a rising interval and if an instance that the integration result is greater than a predetermined value a phase commutation time point is setand conversion into a senseless operation mode is performed if the back-emf detected from the lead voltage is in a stable interval, based on a frequency of the voltage applied to the stator winding.
    • 公开了一种BLDC电机的启动控制方法。 该方法可以控制BLDC电机,以防止产生瞬态电流,从而可以在启动阶段减小BLDC电机的振动,并执行稳定转换为无意义运行模式,使得BLDC电机的启动故障率 可以减少 启动控制方法包括根据转子位置对应用于定子绕组的电流进行换向。 操作BLDC电动机的方法包括被强制对准的转子位置,从而进行相位换向,从未施加到其上的电压的相位的引线电压检测反向电动势(反电动势) 在执行相位换向之后,执行关于所检测的反电动势是否处于上升间隔的确定。 未对其施加的电压的相位的引导电压被积分,使得如果反电动势处于上升间隔,并且如果积分结果大于预定值的情况,则设置相位换向时间点, 基于施加到定子绕组的电压的频率,如果从引线电压检测到的反电动势处于稳定的间隔,则执行转换为无意义操作模式。
    • 10. 发明申请
    • LIQUID CRYSTAL DISPLAY DEVICE
    • 液晶显示装置
    • US20070046856A1
    • 2007-03-01
    • US11552289
    • 2006-10-24
    • Sang LeeJung KangSang Lee
    • Sang LeeJung KangSang Lee
    • G02F1/1335
    • G02B6/0038G02B6/0053G02F2001/133607
    • An LCD device has scratch-resistant property without using a protection sheet and can provide enhanced brightness. The LCD device includes a light path regulating member. The member includes a first prism sheet having first prisms of which apex has a round shape. The first prism sheet concentrates light supplied from a lamp to output the concentrated light. An anti-glare polarizing plate uniformly polarizes polarized planes of the concentrated light and provides the polarized light to the lower substrate. The anti-glare polarizing plate is arranged below the lower substrate of an LCD panel, and an uppermost prism sheet of optical sheets is non-matte-treated and has round-treated apexes. In spite of the absence of the protection sheet, the scratch-resistant property of the uppermost prism sheet and the brightness of the LCD panel may be enhanced.
    • 液晶显示装置具有耐刮擦性能,不使用保护片,可提供更高的亮度。 LCD装置包括光路调节部件。 该构件包括具有顶点具有圆形形状的第一棱镜的第一棱镜片。 第一棱镜片集中从灯提供的光以输出集中的光。 抗眩光偏光板使聚光的偏振面均匀地偏振,并向下基板提供偏振光。 防眩光偏振板配置在LCD面板的下基板的下方,最上方的光学片棱镜片未经磨光处理,具有圆形处理的顶点。 尽管不存在保护片,但是可以提高最上面的棱镜片的耐擦伤性和LCD面板的亮度。