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    Liquid crystal display panel driving device
    5.
    发明授权
    Liquid crystal display panel driving device 失效
    液晶显示面板驱动装置

    公开(公告)号：US5619224A

    公开(公告)日：1997-04-08

    申请号：US366419

    申请日：1994-12-27

    申请人： Masafumi Hoshino ,  Shuhei Yamamoto ,  Hiroyuki Fujita ,  Hirotomo Oniwa ,  Teruo Ebihara ,  Fujio Matsu

    发明人： Masafumi Hoshino ,  Shuhei Yamamoto ,  Hiroyuki Fujita ,  Hirotomo Oniwa ,  Teruo Ebihara ,  Fujio Matsu

    IPC分类号： G02F1/133 ,  G09G3/20 ,  G09G3/36

    CPC分类号： G09G3/3625 ,  G09G2310/0208 ,  G09G3/2014

    摘要： In order to prevent signal distortion using a multiple line selection driving technique when using pulse width modulation to achieve a half-tone display in a liquid crystal display panel, respective bits of column signals are arranged in a descending pulse width order and a voltage generating circuit is used to lower level differences in adjacent bits. An orthonormal function generating circuit generates a plurality of row signals to drive a group of row electrodes through a vertical driver. A dot product computation circuit computes a dot product of the orthonormal functions and pixel display data to generate a column signal in the above manner. A horizontal driver applies the column signal to a group of column electrodes. Pixel data is stored in a frame memory, each datum being represented by a series of bits corresponding to a gray scale. The dot product computation circuit divides the pixel data into the respective bits, and individually carries out the dot product computation for each bit. The horizontal driver arranges the column signal components in order of descending pulse width. A voltage level circuit lowers the voltage level between the column components to reduce distortion caused by the high switching speed between the components and the low response time of the liquid crystal material.

    摘要翻译： 为了在使用脉冲宽度调制来实现液晶显示面板中的半色调显示时，为了防止使用多行选择驱动技术的信号失真，列信号的各个位按照下降的脉冲宽度顺序排列，电压产生电路 用于降低相邻位的电平差。 正交函数发生电路产生多个行信号以通过垂直驱动器驱动一组行电极。 点积计算电路以上述方式计算正交函数和像素显示数据的积积以产生列信号。 水平驱动器将列信号施加到一组列电极。 像素数据存储在帧存储器中，每个数据由对应于灰度级的一系列位表示。 点积计算电路将像素数据分割成各个位，并且分别对每个位执行点积计算。 水平驱动器按照下降脉冲宽度的顺序排列列信号分量。 电压电平电路降低列组件之间的电压电平，以减少由组件之间的高切换速度引起的失真和液晶材料的低响应时间。

    Liquid crystal spatial light modulator for edge detection employing diffusion in the photoconductive layer to enlarge image
    6.
    发明授权
    Liquid crystal spatial light modulator for edge detection employing diffusion in the photoconductive layer to enlarge image 失效
    用于边缘检测的液晶空间光调制器，其利用光电导层中的扩散来放大图像

    公开(公告)号：US5420709A

    公开(公告)日：1995-05-30

    申请号：US905280

    申请日：1992-06-26

    申请人： Naoki Kato ,  Shuhei Yamamoto ,  Teruo Ebihara ,  Rieko Sekura ,  Junko Yamanaka

    发明人： Naoki Kato ,  Shuhei Yamamoto ,  Teruo Ebihara ,  Rieko Sekura ,  Junko Yamanaka

    IPC分类号： G02F1/133 ,  G02F1/135 ,  G02F1/137 ,  G02F1/141 ,  G02F3/00 ,  G06K9/58 ,  G02F1/13

    CPC分类号： G06K9/58 ,  G02F1/135 ,  G02F1/141

    摘要： An edge image extraction light modulator forms an edge portion image corresponding to a boundary between two optically equalized portions of a liquid crystal layer. Each portion has a different bistable state and an edge portion optically distinct from the two optically equalized portions. An optical image is written onto the light valve while applying a voltage between two transparent electrode layers of the light valve to effect switching between a first stable optical axis and a second stable optical axis. The light valve is illuminated and the edge portion of the written image is read. A first and a second polarizer are in crossed-Nicols position so that the two optically equalized portions comprise a portion having the written image except for the edge portion thereof and a non-written portion. The edge portion is not optically equal to the two optically equal portions and can thus be detected. A method of driving the edge image extraction light modulator includes writing an optical image onto the light valve by irradiating a photoconductive layer with light. A first pulse voltage is applied to erase and reset the light valve, and a second pulse voltage is applied, having a polarity opposite that of the first pulse voltage, to generate carriers diffusing in the photoconductive film to impart an electric field to the liquid crystal layer and form an enlarged image of the optical image in the light valve. A third pulse voltage, having the same polarity as that of the first pulse voltage, erases a part of the enlarged image except for an edge portion thereof to form an edge enhanced image in the light valve.

    摘要翻译： 边缘图像提取光调制器形成与液晶层的两个光学均衡部分之间的边界对应的边缘部分图像。 每个部分具有不同的双稳态和与两个光学均衡部分光学不同的边缘部分。 在光阀的两个透明电极层之间施加电压以在第一稳定光轴和第二稳定光轴之间进行切换，将光学图像写入光阀。 点亮光阀，读取写入图像的边缘部分。 第一和第二偏振器处于十字尼科耳尔位置，使得两个光学均衡部分包括除了其边缘部分之外的具有写入图像的部分和非写入部分。 边缘部分不是光学上等于两个光学相等的部分，因此可以被检测。 驱动边缘图像提取光调制器的方法包括通过用光照射光电导层将光学图像写入光阀。 施加第一脉冲电压以擦除和复位光阀，施加具有与第一脉冲电压相反的极性的第二脉冲电压，以产生在光电导膜中扩散的载流子以向液晶施加电场 并在光阀中形成光学图像的放大图像。 具有与第一脉冲电压相同极性的第三脉冲电压擦除除了其边缘部分之外的放大图像的一部分，以在光阀中形成边缘增强图像。

    Method for driving ferroelectric liquid crystal light valve of light writing type
    7.
    发明授权
    Method for driving ferroelectric liquid crystal light valve of light writing type 失效
    轻型书写式电磁液晶灯的驱动方法

    公开(公告)号：US5221980A

    公开(公告)日：1993-06-22

    申请号：US755616

    申请日：1991-09-05

    申请人： Shuhei Yamamoto ,  Naoki Kato ,  Teruo Ebihara ,  Rieko Sekura

    发明人： Shuhei Yamamoto ,  Naoki Kato ,  Teruo Ebihara ,  Rieko Sekura

    IPC分类号： G02F1/133 ,  G02F1/135 ,  G09G3/36

    CPC分类号： G02F1/135

    摘要： The present invention is concerned with point/output characteristics of a light input image having density gradation using a light writing type light valve comprising a combination of a hydrogenated amorphous silicon photoconductor and a ferroelectric liquid crystal. More specifically, the invention relates to a method of expressing continuous gradation using a light writing type ferroelectric liquid crystal light valve that has been difficult to realize. The expression of continuous gradation is made possible by superposing a DC bias voltage of from 0.1 V to 10 V on a rectangular-wave voltage or a bipolar pulse voltage that has theretofore been used as a driving voltage in order to strongly couple together the spontaneous polarization of ferroelectric liquid crystal and the polarity of the DC voltage, and by eliminating the bistability exhibited by the ferroelectric liquid crystal while developing a monostable condition.

    Ferroelectric liquid crystal spatial light modulator with two threshold characteristics
    8.
    发明授权
    Ferroelectric liquid crystal spatial light modulator with two threshold characteristics 失效
    铁电液晶空间光调制器具有两个阈值特性

    公开(公告)号：US5623352A

    公开(公告)日：1997-04-22

    申请号：US93351

    申请日：1993-07-16

    申请人： Naoki Kato ,  Teruo Ebihara ,  Rieko Sekura ,  Shuhei Yamamoto

    发明人： Naoki Kato ,  Teruo Ebihara ,  Rieko Sekura ,  Shuhei Yamamoto

    IPC分类号： G02F1/133 ,  G02F1/135 ,  G02F3/00

    CPC分类号： G02F1/135

    摘要： By using a ferroelectric liquid crystal light valve having a hydrogenated amorphous silicon photoconductive layer, a spatial light modulator may be driven by a method comprising the sequential application of successive pulse voltages of selective amplitude, polarity and duration to cause the spatial light modulator to manifest a second threshold level suitable for application of the device in Boolean processing applications and Fourier image processing.

    摘要翻译： 通过使用具有氢化非晶硅光电导层的铁电液晶光阀，空间光调制器可以通过包括顺序施加选择性振幅，极性和持续时间的连续脉冲电压的方法来驱动，以使空间光调制器显示出 适用于布尔处理应用和傅立叶图像处理中的设备的第二阈值水平。

    Display device
    9.
    发明申请
    Display device 审中-公开
    显示设备

    公开(公告)号：US20100296027A1

    公开(公告)日：2010-11-25

    申请号：US12311875

    申请日：2007-10-16

    申请人： Tsutomu Matsuhira ,  Teruo Ebihara ,  Mitsuyoshi Hara

    发明人： Tsutomu Matsuhira ,  Teruo Ebihara ,  Mitsuyoshi Hara

    IPC分类号： G02F1/1335 ,  G02F1/1333

    CPC分类号： G02F1/133308 ,  G02F2201/503 ,  G02F2202/28

    摘要： Glass plates for reinforcement are attached over an entire surface of a display region on a display surface side and its opposite side of a liquid crystal panel 30 to increase performance of a loading resistance to an impact from an outside or pressing force, whereby the liquid crystal panel 30 is allowed to be thin. Specifically, there is provided a display device including: the liquid crystal panel 30 which includes two transparent substrates sandwiching liquid crystals therebetween and an optical film placed on at least one of outer surfaces of the two transparent substrates; a first glass plate which is attached on a display surface side of the liquid crystal panel 30 through a first adhesive made of an optical adhesive or a translucent bonding sheet; and a second glass plate which is attached on a rear surface side of the liquid crystal panel 30 through a second adhesive made of the optical adhesive or the translucent bonding sheet.

    摘要翻译： 用于加强的玻璃板被附着在显示表面侧的显示区域的整个表面上以及液晶面板30的相对侧，以增加对外部的冲击的负载阻力或压力的性能，由此液晶 面板30被允许变薄。 具体地说，提供了一种显示装置，包括：液晶面板30，其包括夹着液晶的两个透明基板和位于两个透明基板的至少一个外表面上的光学薄膜; 第一玻璃板，其通过由光学粘合剂或半透明粘合片制成的第一粘合剂附着在液晶面板30的显示表面侧; 以及第二玻璃板，其通过由光学粘合剂或半透明粘合片制成的第二粘合剂附着在液晶面板30的后表面侧。