公开(公告)号：US06215536B1

公开(公告)日：2001-04-10

申请号：US09227051

申请日：1999-01-07

申请人： Teruo Ebihara ,  Shunichi Motte ,  Kaori Takano ,  Shigeru Sembonmatsu ,  Hiroshi Sakuma ,  Takakazu Fukuchi ,  Osamu Yamazaki ,  Masafumi Hoshino ,  Naotoshi Shino ,  Shuhei Yamamoto ,  Masanori Fujita

发明人： Teruo Ebihara ,  Shunichi Motte ,  Kaori Takano ,  Shigeru Sembonmatsu ,  Hiroshi Sakuma ,  Takakazu Fukuchi ,  Osamu Yamazaki ,  Masafumi Hoshino ,  Naotoshi Shino ,  Shuhei Yamamoto ,  Masanori Fujita

IPC分类号： G02F11333

CPC分类号： G02F1/133514 ,  G02F1/1334 ,  G02F2203/02

摘要： A reflective liquid crystal display device comprises a transparent first substrate having formed thereon a transparent electrode, a first filter having a first color, and a second filte having a second color. A second substrate is disposed opposite and spaced-apart from the first substrate. A reflection layer is disposed on the second substrate. A polymer dispersed liquid crystal layer is disposed between the transparent electrode and the reflection layer and is formed by exposure to an ultraviolet ray in a preselected wavelength range. A ratio of a transmissivity of the first filter for the ultraviolet ray to a transmissivity of the second filter for the ultraviolet ray is 3.0 or less.

摘要翻译： 反射型液晶显示装置包括其上形成有透明电极的透明第一基板，具有第一颜色的第一滤光器和具有第二颜色的第二滤光片。 第二基板设置成与第一基板相对且间隔开。 反射层设置在第二基板上。 聚合物分散液晶层设置在透明电极和反射层之间，并且通过以预选的波长范围暴露于紫外线而形成。 用于紫外线的第一滤光器的透射率与第二紫外线滤光器的透射率之比为3.0以下。

公开(公告)号：US06323923B1

公开(公告)日：2001-11-27

申请号：US09293866

申请日：1999-04-16

申请人： Masafumi Hoshino ,  Shuhei Yamamoto ,  Shunichi Motte ,  Teruo Ebihara ,  Shigeru Senbonmatsu ,  Kaori Takano ,  Osamu Yamazaki ,  Naotoshi Shino ,  Takakazu Fukuchi ,  Hiroshi Sakama

发明人： Masafumi Hoshino ,  Shuhei Yamamoto ,  Shunichi Motte ,  Teruo Ebihara ,  Shigeru Senbonmatsu ,  Kaori Takano ,  Osamu Yamazaki ,  Naotoshi Shino ,  Takakazu Fukuchi ,  Hiroshi Sakama

IPC分类号： G02F1136

CPC分类号： G02F1/1333 ,  G02F1/1334 ,  G02F1/1362 ,  G02F1/1365 ,  G02F2001/13324 ,  G02F2001/13756

摘要： A reflective type liquid crystal display device has a first transparent substrate, a second transparent substrate, and a light scattering liquid crystal layer disposed between the first and second transparent substrates. A solar cell is disposed on the second transparent substrate. A portion of the solar cell comprises an active element for driving the light scattering liquid crystal layer.

摘要翻译： 反射型液晶显示装置具有第一透明基板，第二透明基板和配置在第一和第二透明基板之间的光散射液晶层。 太阳能电池设置在第二透明基板上。 太阳能电池的一部分包括用于驱动光散射液晶层的有源元件。

公开(公告)号：US06266113B1

公开(公告)日：2001-07-24

申请号：US08879286

申请日：1997-06-19

申请人： Osamu Yamazaki ,  Shunichi Motte ,  Teruo Ebihara ,  Shigeru Senbonmatsu ,  Kaori Taniguchi ,  Takakazu Fukuchi ,  Hiroshi Sakama ,  Masafumi Hoshino ,  Naotoshi Shino ,  Shuhei Yamamoto

发明人： Osamu Yamazaki ,  Shunichi Motte ,  Teruo Ebihara ,  Shigeru Senbonmatsu ,  Kaori Taniguchi ,  Takakazu Fukuchi ,  Hiroshi Sakama ,  Masafumi Hoshino ,  Naotoshi Shino ,  Shuhei Yamamoto

IPC分类号： G02F11335

CPC分类号： G02F1/133533 ,  G02F1/1334 ,  G02F1/133509 ,  G02F1/133536 ,  G02F1/133553 ,  G02F1/133617 ,  G02F1/13718 ,  G02F2001/133543 ,  G02F2201/086 ,  G04G9/0047

摘要： A reflection type liquid crystal display device according to the present invention is constructed to include: a light modulation layer having a light scattering state changed when a voltage is applied between electrode faces; at least one kind of color separation layer arranged at the back of the liquid crystal; and a reflection layer arranged at the back of the color separation layer. The light modulation layer is a polymer network type polymer scattered liquid crystal layer or a phase conversion type liquid crystal layer, and the color separation mirror is a cholesteric liquid crystal polymer layer or a dielectric multi-layered thin film characterized to reflect a light within a predetermined wavelength range in the visible light region selectively. A reflection preventing layer and an ultraviolet ray cut-off layer are further arranged on the surfaces of the electrode faces.

摘要翻译： 根据本发明的反射型液晶显示装置被构造成包括：当在电极面之间施加电压时，具有光散射状态改变的光调制层; 配置在液晶背面的至少一种分色层; 以及布置在分色层背面的反射层。 光调制层是聚合物网络型聚合物散射液晶层或相变型液晶层，分色镜是胆甾型液晶聚合物层或电介质多层薄膜，其特征在于反射内部的光 选择性地在可见光区域中预定的波长范围。 反射防止层和紫外线截止层还设置在电极面的表面上。

公开(公告)号：US5990995A

公开(公告)日：1999-11-23

申请号：US878212

申请日：1997-06-18

申请人： Teruo Ebihara ,  Osamu Yamazaki ,  Shunichi Motte ,  Shigeru Senbonmatsu ,  Kaori Taniguchi ,  Naotoshi Shino ,  Shuhei Yamamoto ,  Hiroshi Sakama ,  Masafumi Hoshino ,  Takakazu Fukuchi

发明人： Teruo Ebihara ,  Osamu Yamazaki ,  Shunichi Motte ,  Shigeru Senbonmatsu ,  Kaori Taniguchi ,  Naotoshi Shino ,  Shuhei Yamamoto ,  Hiroshi Sakama ,  Masafumi Hoshino ,  Takakazu Fukuchi

IPC分类号： G02F1/1334 ,  G02F1/1335 ,  G02F1/13357 ,  G04G9/00 ,  H01L31/04 ,  G02F1/1331

CPC分类号： G02F1/133553 ,  G02F1/133536 ,  G04G9/0029 ,  G02F1/1334 ,  G02F2001/133616

摘要： A reflection type liquid crystal display device comprises a pair of substrates having electrodes, a light scattering type liquid crystal layer interposed between the substrates, a reflection layer disposed over a rear surface of the light scattering type liquid crystal layer, and a light absorbing layer disposed over a rear surface of the reflection layer for absorbing a light passed through the reflection layer. The light scattering type liquid crystal layer changes into a scattering state or a transparent state in accordance with a change in a voltage level between the electrodes, and transmits 60% or more of incident light irrespective of the change in the voltage level between the electrodes. The reflection layer has a reflectivity within a range of 10 to 50% for reflecting a forward scattered light passed through the light scattering type liquid crystal layer.

摘要翻译： 一种反射型液晶显示装置，包括一对具有电极的基板，插入在基板之间的光散射型液晶层，设置在光散射型液晶层的后表面上的反射层和设置在光散射型液晶层的后表面上的光吸收层 在反射层的后表面上，用于吸收通过反射层的光。 光散射型液晶层根据电极之间的电压电平的变化而变为散射状态或透明状态，并且与电极之间的电压电平的变化无关地发射60％以上的入射光。 反射层的反射率在10〜50％的范围内，用于反射通过光散射型液晶层的前向散射光。

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。

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.

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。

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。

公开(公告)号：US5815128A

公开(公告)日：1998-09-29

申请号：US579250

申请日：1995-12-27

申请人： Masafumi Hoshino ,  Fujio Matsu ,  Shuhei Yamamoto

发明人： Masafumi Hoshino ,  Fujio Matsu ,  Shuhei Yamamoto

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

CPC分类号： G09G3/3625 ,  G09G3/2014

摘要： A liquid crystal display panel gray shade driving device comprises first circuitry for applying row signals represented by a set of orthonormal functions to a group of row electrodes throughout one frame by set sequential scanning for each of selecting periods, and second circuitry for sequentially carrying out a dot product computation between the set of orthonormal functions and a set of pixel data consisting of bits, and applying a column signal having a voltage level corresponding to a result of the computation to each of a group of column electrodes in synchronization with the set sequential scanning for each of the selecting periods. The first circuitry has a vertical driver for applying the row signal, by doubling the rate thereof, to the group of row electrodes and repeating the same set sequential scanning at least for two frames of previous and subsequent frames. The second circuitry has a frame memory for holding the pixel data in each frame while dividing it according to a significance of each bit and a dot product computing circuit for reading out the set of held pixel data per significance of each bit and carrying out the dot product computation to generate a column signal component corresponding to the significance of each bit. A horizontal driver divides the column signal components into a significant bit component and a less significant bit component, and distributes one component to the previous frame and the other to the subsequent frame to generate a column signal which is applied to the group of column electrodes.

摘要翻译： 液晶显示面板灰色阴影驱动装置包括：第一电路，用于通过针对每个选择周期设置顺序扫描，将由一组正交功能表示的行信号施加到整个一个帧的一组行电极;以及第二电路，用于依次执行 在正交函数集合和由位组成的像素数据集合之间进行点积计算，并且将与计算结果相对应的电压电平的列信号与设置的顺序扫描同步地施加到一组列电极组中的每一列 对于每个选择周期。 第一电路具有垂直驱动器，用于通过将行信号的速率加倍到行电极组并且至少对先前帧和后续帧的两帧重复相同的设置顺序扫描来施加行信号。 第二电路具有帧存储器，用于在每帧中保持像素数据，同时根据每个位的重要性分割像素数据;以及点积计算电路，用于根据每个位的每个显着性读出一组保持的像素数据，并执行点 产品计算生成对应于每个位的重要性的列信号分量。 水平驱动器将列信号分量划分为有效位组件和较低有效位组件，并将一个组件分配给先前帧，将另一组件分配给后续帧，以生成应用于列电极组的列信号。

公开(公告)号：US5696524A

公开(公告)日：1997-12-09

申请号：US437500

申请日：1995-05-09

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

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

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

CPC分类号： G09G3/3625 ,  G09G2310/0208 ,  G09G3/2014 ,  G09G3/2018

摘要： A display device includes a vertical driver for applying to row electrodes a set of row signals represented by a set of orthogonal functions supplied by an orthogonal function generator at each selection period by group-sequential scanning within one frame. A dot product processor successively carries out a dot product computation between the set of orthogonal functions and a set of pixel data. A horizontal driver applies to column electrodes column signals having voltage levels determined by the results of the dot product computation at each selection period in synchronization with the group-sequential scanning. A frame memory stores the pixel data for each frame in divided bit form. The dot product processor reads out the set of stored pixel data in divided bit form and executes the dot product computation to produce a column signal component for each respective bit. The horizontal driver arranges a plurality of column signal components corresponding to the respective bits subjected to either pulse modulation or frame-rate modulation within one frame period to produce the column signal that is applied to the column electrodes. A memory controller controls the writing of the pixel data into the frame memory. Bit data subjected to the pulse modulation are written to the frame memory for every frame, while bit data subjected to frame-rate modulation are selectively written to the frame memory only at frames specified by the frame-rate modulation.

摘要翻译： 显示装置包括垂直驱动器，用于在一个帧内通过组顺序扫描在每个选择周期向行电极施加一组由正交函数发生器提供的正交函数表示的行信号。 点积处理器依次在正交函数集合和一组像素数据之间执行点积计算。 横向驱动器适用于具有由组顺序扫描同步的每个选择周期的点积计算结果确定的电压电平的列电极列信号。 帧存储器以分割位形式存储每帧的像素数据。 点积处理器以分割位形式读出存储的像素数据集，并执行点积计算，以产生每个相应位的列信号分量。 水平驱动器在一个帧周期内配置对应于经过脉冲调制或帧速率调制的各个比特的多个列信号分量，以产生施加到列电极的​​列信号。 存储器控制器控制将像素数据写入帧存储器。 经过脉冲调制的位数据被写入每帧的帧存储器，而经帧速率调制的位数据仅在由帧速率调制指定的帧中选择性地写入帧存储器。