公开(公告)号：US6005651A

公开(公告)日：1999-12-21

申请号：US586418

申请日：1996-01-16

申请人： Hiroshi Takahara ,  Hideki Ohmae ,  Hideaki Mochizuki

发明人： Hiroshi Takahara ,  Hideki Ohmae ,  Hideaki Mochizuki

IPC分类号： G02F1/1334 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1333 ,  G02F1/136 ,  G02F1/137

CPC分类号： G02F1/133502 ,  G02F1/1334 ,  G02F1/133512 ,  G02F1/133553

摘要： In a display panel, a first substrate is opposed to a second substrate and interposing a liquid crystal/resin composite layer. If the display panel is a transmission type display, a film for absorbing light is formed on a black matrix and between pixel electrodes. If the display panel is a reflection type display, a film for absorbing light is formed between reflection electrodes. Further, a counterelectrode is made from a multi-layer film of dielectric films and a transparent electrically conductive film for preventing reflection. The film for absorbing light includes pigments which can absorb light modulated by the liquid crystal/resin composite layer. By using the display panel, a projection display system of high contrast and high brightness can be constructed.

摘要翻译： 在显示面板中，第一基板与第二基板相对并插入液晶/树脂复合层。 如果显示面板是透射型显示器，则在黑矩阵和像素电极之间形成用于吸收光的膜。 如果显示面板是反射型显示器，则在反射电极之间形成吸收光的膜。 此外，反电极由介电膜的多层膜和用于防止反射的透明导电膜制成。 用于吸收光的膜包括可吸收由液晶/树脂复合层调制的光的颜料。 通过使用显示面板，可以构造出高对比度和高亮度的投影显示系统。

公开(公告)号：US5610735A

公开(公告)日：1997-03-11

申请号：US249623

申请日：1994-05-26

申请人： Hideki Ohmae ,  Hiroshi Takahara

发明人： Hideki Ohmae ,  Hiroshi Takahara

IPC分类号： G02F1/1334 ,  H04N5/74 ,  G02F1/1335 ,  G02F1/1333

CPC分类号： H04N5/7441 ,  G02F1/1334

摘要： A light valve projection apparatus includes a light source, a light valve used for forming optical images in response to a change in light scattering conditions in the light valve of light irradiated from the light source, a projection lens for projecting the optical images on a screen, and a shield for shielding the optical images formed at or near a pupil of the projection lens. If the brightness of light exiting from the light valve, which is in a light scattering state, in a direction tilted by .theta. degrees from a normal dissection of the light valve is assumed to be half as bright as the light outgoing in the normal direction at .theta..sub.1/2, .theta..sub.1/2 of the light valve is less than 23.degree.. The light valve may be a polymer dispersion liquid crystal display panel. When the polymer dispersion liquid crystal display panel is in a transparent state, light transmitted through the liquid crystal display panel is shielded by the shield, thus showing a black display on a screen. When the polymer dispersion liquid crystal display panel is in a light scattering state, light is scattered by the panel so that images formed in the panel are enlarged and projected by way of the projection lens onto the screen, thereby showing a bright white display.

摘要翻译： 光阀投影装置包括光源，用于响应于从光源照射的光的光阀中的光散射条件的变化而形成光学图像的光阀，用于将光学图像投影在屏幕上的投影透镜 以及用于屏蔽形成在投影透镜的瞳孔处或附近的光学图像的屏蔽件。 如果从与光阀的正常解剖倾斜θ度的方向从光阀散射状态出射的光的亮度假定为与正常方向出射的光一样亮 光阀的θ+ E，fra 1/2 + EE，θ+ E，fra 1/2 + EE小于23°。 光阀可以是聚合物分散液晶显示面板。 当聚合物分散液晶显示面板处于透明状态时，透过液晶显示面板的光被屏蔽屏蔽，从而在屏幕上显示黑色显示。 当聚合物分散液晶显示面板处于光散射状态时，光被面板散射，使得在面板中形成的图像通过投影透镜放大并投射到屏幕上，从而显示出明亮的白色显示。

公开(公告)号：US5875008A

公开(公告)日：1999-02-23

申请号：US794855

申请日：1997-02-05

申请人： Hiroshi Takahara ,  Hideki Ohmae ,  Yoshito Miyatake ,  Mitsuhiro Wada

发明人： Hiroshi Takahara ,  Hideki Ohmae ,  Yoshito Miyatake ,  Mitsuhiro Wada

IPC分类号： G02F1/1333 ,  G02F1/1334 ,  G02F1/1335 ,  G02F1/1339 ,  H04N9/31 ,  G03B21/26

CPC分类号： H04N9/3105 ,  G02F1/133345 ,  G02F1/1334 ,  G02F1/133526 ,  H04N9/3152 ,  H04N9/317 ,  G02F1/133502 ,  G02F1/13394 ,  G02F2203/02 ,  G02F2203/055

摘要： In an optical system phase device such as .lambda./2 plate or a .lambda./4 plate is used to convert S polarization to P polarization and vice versa. In the projection display, a white light emitted from a light source is separated by a color separation optical system, including dichroic mirrors or a dichroic prism, into three primary colors which are modulated by optical modulation elements. Then, the modulated lights are synthesized by a color synthesis optical system and projected by a projection element onto a screen. When appropriate plates are inserted appropriately in the optical system of the projection display, the conversion between S and P polarization occurs and an optical bandwidth becomes narrow, and color purity can be improved. A thick transparent plate is preferably adhered to the optical modulation element. A light absorption film is applied to an ineffective plane of the transparent plate. The phase device is preferably inserted between an optical modulation element and a transparent plate or the like to improve contrast. The invention can be applied to liquid crystal panels such as liquid crystal/resin display panels, light beam writing type display panel or micro mirror display panel. Preferably, the phase device is set to be rotatable so as to adjust contrast appropriately.

摘要翻译： 在光学系统中，使用诸如λ/ 2板或λ/ 4板的相位装置将S偏振转换为P偏振，反之亦然。 在投影显示中，由光源发出的白光由包括分色镜或二向色棱镜的分色光学系统分离成由光调制元件调制的三原色。 然后，调制光由彩色合成光学系统合成并由投影元件投影到屏幕上。 当在投影显示器的光学系统中适当地插入适当的板时，发生S和P偏振之间的转换，并且光学带宽变窄，并且可以提高色纯度。 优选将厚的透明板粘附到光调制元件。 将光吸收膜施加到透明板的无效平面上。 相位装置优选地插入在光调制元件和透明板等之间以改善对比度。 本发明可以应用于液晶/树脂显示面板，光束写入型显示面板或微镜显示面板等液晶面板。 优选地，相位装置被设置为可旋转的，以便适当地调节对比度。

公开(公告)号：US5737050A

公开(公告)日：1998-04-07

申请号：US586421

申请日：1996-01-16

申请人： Hiroshi Takahara ,  Hideki Ohmae

发明人： Hiroshi Takahara ,  Hideki Ohmae

IPC分类号： G02F1/1333 ,  G02F1/1334 ,  G02F1/1335

CPC分类号： G02F1/1334 ,  G02F1/1333 ,  G02F1/133502 ,  G02F1/133526 ,  G02F1/133512 ,  G02F1/133553

摘要： In a light valve, a liquid crystal layer made of liquid crystal/resin composite is interposed between a transparent substrate with a counterelectrode and a reflection substrate with reflection electrodes. The size of the transparent substrate is designed so that the light modulated by the liquid crystal layer is prevented from again entering into the liquid crystal layer after reflected at an interface of the transparent substrate with air. The transparent substrate may be combined with a transparent plate or flat concave lens with a transparent coupling material. Each pixel has a reflection electrode and liquid crystal molecules above the reflection electrode are aligned according to the signals supplied to thin film transistors. The counterelectrode is formed as a multi-layer film of dielectric films and a transparent electrically conductive film. The dielectric films are made of a material having a refractive index of 1.6-1.8, and the optical thickness of the dielectric films is .lambda./4 while that of the transparent electrically conductive film is .lambda./2. Thus, the reflection of light is prevented by the interference in the multi-layer film. By using the light valve apparatus, the incident light entering from the side of the counterelectrode is scattered or it is transmitted through the liquid crystal layer, reflected by the reflection electrodes and leaves through the counterelectrode. By using the light valve apparatus in a projection display system, an image of high brightness and high contrast can be realized.

摘要翻译： 在光阀中，在具有反电极的透明基板和具有反射电极的反射基板之间插入由液晶/树脂复合体制成的液晶层。 透明基板的尺寸被设计成使得在透明基板与空气的界面反射之后防止由液晶层调制的光再次进入液晶层。 透明基板可以与具有透明耦合材料的透明板或平凹透镜组合。 每个像素具有反射电极，并且反射电极上方的液晶分子根据提供给薄膜晶体管的信号进行对准。 反电极形成为介电膜和透明导电膜的多层膜。 电介质膜由折射率为1.6-1.8的材料制成，电介质膜的光学厚度为λ/ 4，而透明导电膜的光学厚度为λ/ 2。 因此，通过多层膜的干涉来防止光的反射。 通过使用光阀装置，从反电极侧入射的入射光被散射，或透过液晶层，被反射电极反射并离开反电极。 通过在投影显示系统中使用光阀装置，可以实现高亮度和高对比度的图像。

公开(公告)号：US5712693A

公开(公告)日：1998-01-27

申请号：US601534

申请日：1996-02-14

申请人： Yoshito Miyatake ,  Hiroshi Takahara ,  Hideki Ohmae

发明人： Yoshito Miyatake ,  Hiroshi Takahara ,  Hideki Ohmae

IPC分类号： G02B1/11 ,  G02F1/13 ,  G02F1/1333 ,  G02F1/1334 ,  G02F1/1335 ,  G02F1/137 ,  G03B21/14 ,  H04N5/74

CPC分类号： G02F1/1334 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/133526 ,  G02F2001/13756

摘要： A light valve includes a light valve layer for forming an optical image as variations in its ability to scatter light, and two substrates between which the light valve layer is sandwiched and at least one of which is transparent. The light valve satisfies the following condition: ##EQU1## where t denotes a central thickness of the at least one of the substrates, n denotes a refractive index of the at least one of the substrates and d denotes a maximum diameter of an effective display area of the light valve layer. Alternatively, a transparent plate can be optically coupled to one of the substrates by a transparent body. In this case, the same condition is satisfied except that the thickness refers to a central thickness from a face of the transparent plate remote from the transparent body to the light valve layer.

摘要翻译： 光阀包括用于形成光学图像的光阀层，作为其散射光的能力的变化，以及两个基板，光阀层夹在其间，其中至少一个是透明的。 光阀满足以下条件：其中t表示至少一个基板的中心厚度，n表示至少一个基板的折射率，d表示有效显示区域的最大直径 的光阀层。 或者，透明板可以通过透明体光学耦合到一个基板。 在这种情况下，除了厚度是指从远离透明体的透明板的面到光阀层的中心厚度之外，还满足相同的条件。

公开(公告)号：US5617226A

公开(公告)日：1997-04-01

申请号：US357936

申请日：1994-12-16

申请人： Hideki Ohmae ,  Hiroshi Takahara

发明人： Hideki Ohmae ,  Hiroshi Takahara

IPC分类号： G02F1/1335 ,  G03B21/132 ,  H04N5/74 ,  H04N9/31 ,  G02F1/1333

CPC分类号： H04N9/3105 ,  G03B21/132 ,  H04N5/7441 ,  H04N9/3167 ,  G02F1/133528

摘要： A liquid crystal projection device includes a light source, a polymer dispersed liquid crystal panel for forming an optical image as a function of changes in the light scattering condition, a polarizing plate disposed on at lest one of the incident and exit sides of the liquid crystal panel with respect to the direction of travel of the light, and a projection lens for projecting the optical image onto a polarizing screen. The polarizing plate is removably and rotatably supported so that, by rotating the polarizing plate, the direction of the axis of polarization of the polarizing plate can be substantially aligned with the direction of the axis of the polarizing screen. The polarizing screen is utilized when the polarizing plate is mounted, but a non-polarizing screen may be utilized when the polarizing plate is not used, i.e., removed. Where the polarizing plates is used on both of the incident and exit sides of the panel, the direction of the axis of polarization of the polarizing plate on the incident side is to be substantially aligned with that of the polarizing plate on the exit side.

摘要翻译： 液晶投影装置包括光源，用于形成作为光散射条件变化的函数的光学图像的聚合物分散液晶面板，设置在液晶的入射侧和出射侧中的至少一个的偏振片 相对于光的行进方向的面板，以及用于将光学图像投影到偏振屏上的投影透镜。 偏振板可拆卸地且可旋转地支撑，使得通过使偏振片旋转，偏振板的偏振轴的方向可以与偏振屏的轴线方向基本对准。 当安装偏振片时使用偏振屏，但是当不使用偏振片即可去除时，可以使用非偏振屏。 在面板的入射侧和出射侧的两侧使用偏振片的情况下，入射侧的偏振片的偏振轴的方向与出射侧的偏振片的方向基本一致。

公开(公告)号：US5517278A

公开(公告)日：1996-05-14

申请号：US896961

申请日：1992-06-11

申请人： Hiroshi Takahara ,  Hideki Ohmae ,  Yoshito Miyatake

发明人： Hiroshi Takahara ,  Hideki Ohmae ,  Yoshito Miyatake

IPC分类号： H04N5/225 ,  G03B17/18 ,  G03B13/02

CPC分类号： H04N5/2251

摘要： A viewfinder suited for use in a video camera, wherein rays of light emitted at a large solid angle from a minute light emitting area of a light emitting element are converted by a condenser lens into a bundle of generally parallel rays of light having a narrow directionality before they enter a liquid crystal display. The liquid crystal display modulates the rays of light emerging from the condenser lens according to a video signal to effect an image display. The displayed image is magnified by a magnifying lens. The liquid crystal display is of a type wherein an optical image is formed as a function of a change in state of light scattering and may be a polymer dispersed liquid crystal display, a liquid crystal panel utilizing a dynamic scattering mode, a ferro-electric liquid crystal panel using a scattering mode or a display panel utilizing PLZT.

摘要翻译： 适用于摄像机的取景器，其中从发光元件的微小发光区域以大的立体角发射的光由聚光透镜转换成具有窄方向性的大致平行的光束 在他们进入液晶显示器之前。 液晶显示器根据视频信号调制从聚光透镜出射的光线，以进行图像显示。 显示的图像被放大镜放大。 液晶显示器是其中形成光学图像作为光散射状态变化的函数的类型，并且可以是聚合物分散液晶显示器，使用动态散射模式的液晶面板，铁电液体 使用散射模式的水晶面板或利用PLZT的显示面板。

公开(公告)号：US5477351A

公开(公告)日：1995-12-19

申请号：US44074

申请日：1993-04-08

申请人： Hiroshi Takahara ,  Hideki Ohmae

发明人： Hiroshi Takahara ,  Hideki Ohmae

IPC分类号： G02F1/1334 ,  G02F1/1335 ,  G02F1/13 ,  G02F1/137

CPC分类号： G02F1/1334 ,  G02F1/133553 ,  G02F2201/30

摘要： Pixel electrodes of a liquid crystal panel are made of a transparent conductive material, while a reflection electrode is formed on a counter substrate. A liquid crystal layer made of liquid crystal/resin composite is interposed between the pixel electrodes and the reflection electrode. Incident light is scattered in the liquid crystal layer or transmits the liquid crystal layer and is reflected by the reflection electrode according to the applied voltage to modulate the light. The pixel electrodes consist for example of two layers of a dielectric layer of thickness of .lambda./4 and a transparent conductive layer of thickness of .lambda./2. A grating is formed on the reflection electrode at the interface with the liquid crystal. When a voltage is applied to the liquid crystal layer, the refractive index thereof changes to be equal to that of the grating, and the incident light propagates straightly. Otherwise the incident light is diffracted. The liquid crystal panel is used as a light bulb for a projection type television.

摘要翻译： 液晶面板的像素电极由透明导电材料制成，而在相对基板上形成反射电极。 由液晶/树脂复合体构成的液晶层插入在像素电极和反射电极之间。 入射光散射在液晶层中或透射液晶层，并根据所施加的电压被反射电极反射以调制光。 像素电极例如由两层厚度为λ/ 4的电介质层和厚度为λ/ 2的透明导电层构成。 在与液晶的界面处的反射电极上形成光栅。 当对液晶层施加电压时，其折射率变化为与光栅相同，入射光直接传播。 否则入射光会被衍射。 液晶面板用作投影型电视的灯泡。

公开(公告)号：US5469278A

公开(公告)日：1995-11-21

申请号：US345364

申请日：1994-11-18

申请人： Hiroshi Takahara ,  Hideki Ohmae

发明人： Hiroshi Takahara ,  Hideki Ohmae

IPC分类号： G02F1/1334 ,  G02F1/1335 ,  G02F1/1362 ,  G02F1/137 ,  H04N5/232 ,  H04N9/31 ,  G02F1/13

CPC分类号： H04N9/3105 ,  G02F1/1334 ,  H04N5/23293 ,  H04N9/312 ,  H04N9/3155 ,  H04N9/317 ,  G02F1/133512 ,  G02F1/133514 ,  G02F1/1362 ,  G02F2001/13756

摘要： A liquid crystal panel includes a liquid crystal/polymer composite between two substrates, one of which having a matrix of pixel electrodes. A mosaic color filter of red, green and blue is provided above counterelectrodes or pixel electrodes. The average pore size of the resin component or of the diameter of liquid crystal droplets in the composite is selected according to the color of the color filter. The average of pore sizes is the largest for red, and the smallest for blue. The average of pore sizes of the resin on the switching elements and on the signal lines is smaller than that on the pixel electrodes. This liquid crystal display panel is used as a light bulb for a projection type television system. This liquid crystal display panel is also used as a viewfinder of a video camera.

摘要翻译： 液晶面板包括在两个基板之间的液晶/聚合物复合材料，其中一个具有像素电极的矩阵。 在反电极或像素电极之上提供红色，绿色和蓝色的马赛克滤色器。 根据滤色器的颜色，选择树脂组分的平均孔径或液晶微滴的直径。 平均孔径是红色最大的，蓝色最小。 开关元件和信号线上的树脂的孔径的平均值小于像素电极上的孔径的平均值。 该液晶显示面板用作投影式电视系统的灯泡。 该液晶显示面板也用作摄像机的取景器。

公开(公告)号：US5436635A

公开(公告)日：1995-07-25

申请号：US27

申请日：1993-01-04

申请人： Hiroshi Takahara ,  Hideki Ohmae

发明人： Hiroshi Takahara ,  Hideki Ohmae

IPC分类号： G02F1/133 ,  G02F1/1333 ,  G09G3/20 ,  G09G3/36 ,  H04N5/232 ,  H04N9/31

CPC分类号： H04N9/312 ,  G09G3/3648 ,  G09G3/3688 ,  H04N5/23293 ,  H04N9/3105 ,  G09G2300/0823 ,  G09G3/2011 ,  G09G3/3614

摘要： Pixel electrodes and thin film transistors are arranged in a matrix in a display device, while polymer dispersion liquid crystals are interposed between an opposite electrode and the pixel electrodes on an electrode substrate. A signal is written into each pixel electrode by a pair of drive ICs for outputting signals in positive and negative polarities respectively with respect to an electrical potential at the opposite electrode. Two transistors are provided at each pixel electrode or an analog switch is provided at a signal output terminal of each drive IC so that signals of positive and negative polarities are not simultaneously written into an identical pixel electrode. When no voltage is applied to the pixel electrode, the incident light is reflected so as to be dispersed by the liquid crystal, and when a voltage is applied to the pixel electrode, the state of the liquid crystal is made light-permeable. The display device is used as a display panel to construct a viewfinder having a low electrical power consumption. The display device is also used as a light valve to construct a projection type television capable of displaying a magnified video picture on a screen with a high luminance.

摘要翻译： 像素电极和薄膜晶体管在显示装置中以矩阵形式布置，而聚合物分散液晶体插入在电极基板上的相对电极和像素电极之间。 通过一对驱动IC将信号写入每个像素电极，用于相对于相对电极处的电位分别输出正极性和负极性的信号。 在每个像素电极处提供两个晶体管，或者在每个驱动IC的信号输出端提供模拟开关，使得正极和负极的信号不被同时写入相同的像素电极。 当没有电压施加到像素电极时，入射光被液晶反射以被分散，并且当向像素电极施加电压时，使液晶的状态变为透光的。 显示装置用作显示面板以构造具有低功耗的取景器。 该显示装置还用作光阀，以构成能够以高亮度在屏幕上显示放大视频图像的投影型电视机。