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    • 1. 发明授权
    • Projection type image displaying apparatus
    • 投影型图像显示装置
    • US5990853A
    • 1999-11-23
    • US875198
    • 1997-11-17
    • Yasunori KuratomiAkio TakimotoKoji AkiyamaHiroshi TsutsuiToshikatsu KawakamiYasuaki MutoHiroshi Miyai
    • Yasunori KuratomiAkio TakimotoKoji AkiyamaHiroshi TsutsuiToshikatsu KawakamiYasuaki MutoHiroshi Miyai
    • G02F1/13G02F1/135G09G3/00
    • G09G3/002G02F1/135G09G2320/0209
    • The present invention relates to a projection type image displaying apparatus capable of displaying larger picture images which are bright, uniform and after-image-free.A projection type image displaying apparatus, comprising a OASLM (1) for grasping an photoconductive layer (4), a light reflection layer (5) and a light modulating layer (6) by two glass substrates (2, 2') with conductive transparent electrodes (3, 3') each being provided on it, an image source (8) for displaying inputting images on the OASLM (1) by a time serial scanning operation, a driving signal generating means (40) for supplying to the OASLM (1) a driving signal synchronized with the vertical synchronous frequency of the image,wherein at least either of two conductive transparent electrodes (3, 3') is divided into a plurality of regions, a driving signal to be generated from the driving signal generating means (40) is composed of a plurality of signals different in phase, a signal to be fed respectively to a region adjacent to the divided conductive transparent electrodes (3) has a phase difference approximately equal to time where the vertical effective scanning period is divided by the number of the region.
    • PCT No.PCT / JP96 / 03140 Sec。 371日期:1997年11月17日 102(e)日期1997年11月17日PCT 1996年10月28日PCT公布。 公开号WO97 / 15862 日期:1997年5月1日本发明涉及能够显示较亮,均匀,无图像后的较大图像的投影型图像显示装置。 一种投影型图像显示装置,包括用于抓取光电导层(4)的OASLM(1),具有导电透明的两个玻璃基板(2,2')的光反射层(5)和光转换层(6) 每个设置在其上的电极(3,3'),用于通过时间串行扫描操作在OASLM(1)上显示输入图像的图像源(8),用于提供给OASLM的驱动信号发生装置(40) 1)与图像的垂直同步频率同步的驱动信号,其中两个导电透明电极(3,3')中的至少一个被分成多个区域,从驱动信号产生装置产生的驱动信号 (40)由相位不同的多个信号组成,分别馈送到与分割的导电透明电极(3)相邻的区域的信号具有大约等于垂直有效扫描周期被分割的时间的相位差 根据该地区的数量。
    • 2. 发明授权
    • Video display device
    • 视频显示设备
    • US5847778A
    • 1998-12-08
    • US675185
    • 1996-07-03
    • Yasuaki MutoHiroshi MiyaiAkio TakimotoYasunori KuratomiToshikazu KawakamiHiroshi Noguchi
    • Yasuaki MutoHiroshi MiyaiAkio TakimotoYasunori KuratomiToshikazu KawakamiHiroshi Noguchi
    • H04N5/74H04N9/12H04N9/16
    • H04N5/7441
    • In a projection type video display device comprising a light writing type spacial light modulator, disturbances brought about by a resetting pulse and appearing in a projected picture as a black belt or beat are prevented. This is accomplished by causing the resetting pulse, which is to withdraw electric charges produced by incoming writing light and accumulated in spacial light modulator, to occur within a vertical blanking period synchronized with vertical synchronization signal. Further, by changing the pulse width and the voltage of the resetting pulse in accordance with vertical synchronization frequency, pictures of a certain fixed brightness are made available against various vertical synchronization frequencies; and even with a high vertical synchronization frequency, projected pictures are never annoyed by such disturbance that is caused by a resetting pulse dislocated out of the vertical blanking period. Further, by controlling the adjustments of the writing voltage to be applied to the spacial light modulator during the writing period and the resetting voltage to be applied to the spacial light modulator during the resetting period, the spread in characteristics of the spacial light modulator is compensated to provide a certain fixed contrast and .gamma. characteristic. Furthermore, in a video display device for full-color display, writing voltage and resetting voltage can be established independently corresponding to the respective three RGB primary colors, video outputs of any desired color temperature are obtainable by adjusting the balance of light emission among the three RGB colors.
    • 在包括光写型空间光调制器的投影型视频显示装置中,防止由复位脉冲引起的干扰并出现在投影图像中作为黑带或拍子。 这是通过使垂直同步信号同步的垂直消隐周期内产生复位脉冲,该脉冲是由进入的写入光产生的积累的空间光调制器中产生的电荷。 此外,通过根据垂直同步频率改变复位脉冲的脉冲宽度和电压,可以针对各种垂直同步频率获得某个固定亮度的图像; 并且即使具有高的垂直同步频率,投影图像也不会因由在垂直消隐期间脱离的复位脉冲引起的这种干扰而烦恼。 此外,通过控制在写入周期期间施加到空间光调制器的写入电压的调整和在复位周期期间施加到空间光调制器的复位电压,对空间光调制器的特性扩展进行补偿 提供一定的固定对比度和伽马特性。 此外,在用于全色显示的视频显示装置中,可以独立地对应于三个RGB原色独立地建立写入电压和复位电压,任何期望的色温的视频输出可以通过调节三者之间的发光平衡来获得 RGB颜色。