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    • 92. 发明申请
    • METHOD AND DEVICE FOR MANUFACTURING A BROADBAND CHOLESTERIC POLARIZER
    • 用于制造宽带窄带偏振器的方法和装置
    • WO1998008135A1
    • 1998-02-26
    • PCT/IB1997000766
    • 1997-06-23
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN AB
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN ABBROER, Dirk, JanVAN HAAREN, Johannes, Albertus, Matthijs, Maria
    • G02F01/1335
    • G02B5/3016
    • The application describes a method and devices for manufacturing a broadband cholesteric polarizer having a well-defined bandwidth and edge position. To this end, a liquid-crystalline cholesterically ordered layer comprising reactive chiral monomers and reactive nematogenic monomers having a different reactivity is polymerized by exposure to radiation. The invention is characterized in that the intensity of the radiation is increased substantially, preferably by a factor of 10 or more, when a desired edge position of the band is reached. As a result, the bandwidth and egde position of the reflection band reached at that moment are frozen as it were. A monochromatic sensor can be used to determine whether said edge position has been reached, the wavelength used by the sensor corresponding to the wavelength of the desired edge position of the band. Broadband, cholesteric polarizers having a well-defined bandwidth and edge position can very advantageously be used in a display.
    • 该应用描述了用于制造具有明确的带宽和边缘位置的宽带胆甾型偏振器的方法和装置。 为此,包含反应性手性单体和具有不同反应性的反应性生成单体的液晶胆甾醇排序层通过暴露于辐射而聚合。 本发明的特征在于当达到期望的边缘位置时,辐射的强度基本上增加,优选地增加10倍或更多倍。 结果,此时达到的反射带的带宽和位置原样冻结。 可以使用单色传感器来确定所述边缘位置是否已经达到,传感器使用的波长对应于所述带的期望边缘位置的波长。 具有良好定义的带宽和边缘位置的宽带胆甾型偏振器可以非常有利地用于显示器中。
    • 95. 发明申请
    • INDUCTORLESS VOLTAGE BIASING CIRCUIT FOR AN AC-COUPLED AMPLIFIER
    • 用于交流耦合放大器的无电压偏置电路
    • WO1998005118A1
    • 1998-02-05
    • PCT/IB1997000391
    • 1997-04-10
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN AB
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN ABWONG, Stephen, L.
    • H03F01/30
    • H03F1/302
    • An inductorless voltage biasing circuit is provided for an AC-coupled amplifier (10) of the type having a signal input terminal (VIN) and a coupling capacitor (12) for coupling the input terminal (VIN) to a control terminal (16) of the AC-coupled amplifier (10). The voltage biasing circuit includes a voltage source (VB) coupled to the control terminal (16), with the voltage biasing circuit including a differential-input amplifier (18) having a noninverting input coupled to the voltage source (VB), an inverting input, an output terminal (20) and a differential voltage gain characteristic that decreases as a function of frequency. A resistor (22) is coupled between the inverting input and the output terminal (20), and the control terminal (16) of the AC-coupled amplifier is coupled to the inverting input of the differential-input amplifier (18). In this manner, a low-impedance DC-voltage biasing source is provided for an AC-coupled amplifier without using an inductor.
    • 为具有信号输入端(VIN)的类型的AC耦合放大器(10)和用于将输入端(VIN)耦合到控制端(16)的耦合电容(12)的AC耦合放大器(10)提供无电感电压偏置电路, AC耦合放大器(10)。 电压偏置电路包括耦合到控制端子(16)的电压源(VB),其中电压偏置电路包括具有耦合到电压源(VB)的非反相输入的差分输入放大器(18),反相输入 ,输出端子(20)和作为频率的函数而减小的差分电压增益特性。 电阻器(22)耦合在反相输入端和输出端子(20)之间,并且AC耦合放大器的控制端子(16)耦合到差分输入放大器(18)的反相输入端。 以这种方式,在不使用电感器的情况下,为AC耦合放大器提供低阻抗DC电压偏压源。
    • 100. 发明申请
    • COLOUR INTERLACED IMAGE PROJECTION APPARATUS
    • 彩色相关图像投影设备
    • WO1998003019A1
    • 1998-01-22
    • PCT/IB1997000685
    • 1997-06-12
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN AB
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN ABCLARKE, John, Alfred
    • H04N09/31
    • G02B27/1046G02B5/3083G02B27/145H04N5/7441H04N9/3105
    • A colour image projection apparatus comprising a plurality of (LC) image display panels (33), each operating with light of a different colour (R, G, B), whose outputs are combined by combining means (24, 25) and projected via a lens (28) onto a screen (32) and electro-optical deflection means, comprising a birefringent element (40) following the combining means and preceded by polarisation switch means (42) operable to displace slightly the outputs from rows of pixels in each of the panels in either the odd or even fields so as to produce an interlaced image on the screen. Considerably improved performance is achieved by providing a respective, separate, polarisation switch element between each display panel (33) and the combining means (24, 25), and preferably closely adjacent to the output side of the display panel.
    • 一种彩色图像投影设备,包括多个(LC)图像显示面板(33),每个(LC)图像显示面板(33)以不同颜色的光(R,G,B)操作,其输出通过组合装置(24,25) 在屏幕(32)上的透镜(28)和电光偏转装置,包括在组合装置之后的双折射元件(40),之前是偏振开关装置(42),可操作以稍微移位每个像素中的像素的输出 在奇数或偶数场中的面板,以便在屏幕上产生隔行扫描图像。 通过在每个显示面板(33)和组合装置(24,25)之间提供相应的分离的偏振开关元件,并且优选地紧邻显示面板的输出侧来实现明显改善的性能。