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    • 1. 发明授权
    • Light diffusing plate and display apparatus
    • 光扩散板和显示装置
    • US06778239B2
    • 2004-08-17
    • US09484223
    • 2000-01-18
    • Toshitaka AganoAkira YamaguchiKenichi Nakagawa
    • Toshitaka AganoAkira YamaguchiKenichi Nakagawa
    • G02F11335
    • G02B5/0278G02B5/0226G02F1/1336G02F2001/133562
    • The light diffusing plate includes an unrecognizable structure having an optical refractive power, passing areas through which a collimated light incident from a side of the unrecognizable structure passes and a non-passing area other than the passing areas, which has relatively low light transmissivity compared with the passing areas, wherein both materials of the passing areas and non-passing area are applied simultaneously. The display apparatus includes this light diffusing plate, a liquid crystal display panel and a backlight unit. The image display apparatus includes an image display device having a matrix structure and a light diffusing plate including an unrecognizable structure which has an optical refractive power and is provided on a viewing side of a display screen of the image display device. The light diffusing plate has an excellent light diffusing efficiency, and can preferably reduce a contrast drop to be caused by a surface reflection. The display apparatus for the liquid crystal display device can keep a satisfactory contrast ratio over a wide viewing angle and is preferably applicable to a medical use. The image display apparatus can eliminate pixelization or jaggy and obtain a smooth, natural displayed image.
    • 光漫射板包括具有光折射能力的不可识别的结构,通过从不可识别结构的一侧入射的准直光通过的区域和通过区域以外的非通过区域,与通过区域相比具有相对低的透光率 通过区域,其中同时施加通过区域和不通过区域的两种材料。 显示装置包括该光扩散板,液晶显示面板和背光单元。 该图像显示装置包括具有矩阵结构的图像显示装置和包括具有光学屈光度的不可识别结构并设置在图像显示装置的显示屏幕的观看侧的光漫射板。 光漫射板具有优异的光散射效率,并且可以优选地减少由于表面反射引起的对比度下降。 液晶显示装置的显示装置能够在宽视角下保持令人满意的对比度,优选适用于医疗用途。 图像显示装置可以消除像素化或锯齿状,并获得平滑自然的显示图像。
    • 3. 发明授权
    • Retardation compensation element, liquid crystal display device, and liquid crystal projector
    • 延迟补偿元件,液晶显示装置和液晶投影机
    • US07764343B2
    • 2010-07-27
    • US11994798
    • 2006-07-03
    • Kenichi Nakagawa
    • Kenichi Nakagawa
    • G02F1/13363
    • G02F1/1393G02F1/13363G02F2413/03G02F2413/07G02F2413/08G02F2413/10G02F2413/11G02F2413/13
    • A retardation compensation element (32, 32a) has a first optical anisotropic layer (42) that functions as a negative C-plate, and a second and a third optical anisotropic layers (43, 44) that function as positive O-plates. VA mode liquid crystal molecules (37) tilt at an azimuth angle of 45 degrees and a polar angle of 5 degrees when no voltage is applied thereto. The second and third optical anisotropic layers have optical axes respectively at an angle of −105 degrees and +105 degrees from the tilt direction of the liquid crystal molecule. The first optical anisotropic layer (42) compensates the retardation of light that enters a liquid crystal layer (38) at an oblique angle while the second and third optical anisotropic layers (43, 44) compensate the retardation of light that enters the liquid crystal layer at a right angle.
    • 延迟补偿元件(32,32a)具有用作负C板的第一光学各向异性层(42)和用作正O板的第二和第三光学各向异性层(43,44)。 当不施加电压时,VA模式液晶分子(37)以45度的方位角和5度的极角倾斜。 第二和第三光学各向异性层分别具有与液晶分子的倾斜方向成-105度和+ 105度角的光轴。 第一光学各向异性层(42)在第二和第三光学各向异性层(43,44)补偿进入液晶层的光的延迟的同时补偿以倾斜角进入液晶层(38)的光的延迟 以直角。
    • 4. 发明授权
    • Liquid crystal projector, liquid crystal device and substrate for liquid crystal device
    • 液晶投影仪,液晶显示装置及液晶装置用基板
    • US07554635B2
    • 2009-06-30
    • US10512683
    • 2003-07-16
    • Kenichi Nakagawa
    • Kenichi Nakagawa
    • G02F1/1335
    • H04N9/3105G02F1/13363G02F2001/133565G02F2413/02G02F2413/10G02F2413/11G02F2413/14H04N9/3167
    • Red incident light is reflected on a mirror (19) and linearly polarized by a polarizer (26R). Linearly polarized incident light enters a transmissive liquid crystal device (11R), in which oblique incident light is changed into elliptically polarized light. A retardation compensator (27R) between the liquid crystal device (11R) and an analyzer (28R) has an inorganic form birefringence layer. The retardation compensator (27R) yields birefringence effect to change elliptical polarized light into linearly polarized light. Linearly polarized light from the retardation compensator (27R) can pass the analyzer (28R) without decreasing intensity, and enters a color recombining prism (24). The liquid crystal device (11R) may have the inorganic form birefringence layer. Retardation in green and blue light is also compensated in the same manner. Red, green and blue image light, mixed in the color recombining prism (24), is projected onto a screen 3 by a projection lens system (25).
    • 红色入射光在反射镜(19)上反射并被偏振器(26R)线偏振。 线性偏振入射光入射到倾斜入射光变为椭圆偏振光的透射型液晶装置(11R)。 液晶装置(11R)和分析器(28R)之间的相位差补偿器(27R)具有无机形式的双折射层。 延迟补偿器(27R)产生双折射效应以将椭圆偏振光变为线偏振光。 来自延迟补偿器(27R)的线偏振光可以通过分析器(28R)而不降低强度,并进入重新组合棱镜(24)。 液晶装置(11R)可以具有无机形式的双折射层。 绿色和蓝色光的延迟也以相同的方式得到补偿。 在彩色复合棱镜(24)中混合的红色,绿色和蓝色图像光通过投影透镜系统(25)投影到屏幕3上。
    • 6. 发明授权
    • Display engagement system
    • 显示参与系统
    • US07174505B2
    • 2007-02-06
    • US10108340
    • 2002-03-29
    • Kenichi NakagawaKeisuke Katada
    • Kenichi NakagawaKeisuke Katada
    • G06F17/00
    • G06Q10/10G06F17/30873
    • A relay server computer adds control code to background contents to generate web data for display engagement, and sends the generated web data to every client computer. The control code becomes a controller by executed on the client. When an object such as image is pasted on the background contents displayed in an engaged fashion, the controller detects the event occurred by pasting, and sends the information indicating the event to the other clients via relay server. Consequently, the screen with the object being pasted is displayed in an engaged fashion among all clients. The object can be moved, modified, or deleted.
    • 中继服务器计算机将控制代码添加到后台内容以生成用于显示参与的web数据,并将生成的web数据发送到每个客户端计算机。 控制代码通过在客户端上执行成为控制器。 当以诸如图像的对象的形式粘贴在以相关方式显示的背景内容上时,控制器通过粘贴来检测发生的事件,并通过中继服务器向其他客户端发送指示事件的信息。 因此,在所有客户端中以与之对应的方式显示具有被粘贴物体的屏幕。 可以移动,修改或删除该对象。
    • 9. 发明授权
    • Liquid crystal display device for display with gray levels
    • 用于显示灰度的液晶显示装置
    • US5499037A
    • 1996-03-12
    • US261234
    • 1994-06-14
    • Kenichi NakagawaTakaji Numao
    • Kenichi NakagawaTakaji Numao
    • G02F1/133G02F1/1343G09F9/30G09G3/20G09G3/36
    • G02F1/134336G09G3/3607G09G3/364G02F2001/134345G09G3/2074
    • A liquid crystal display device has an arrangement of a plurality of pixel display regions each including a plurality of divided pixels, and is capable of effecting display with a large number of gray levels. Each of the divided pixels is displayed individually and selectively with at least two gray levels. The liquid crystal device further includes pixel electrodes for individually and selectively enabling the divided pixels, and a gray level setting circuit for controlling the sum of the areas of the enabled divided pixels, thereby setting the gray levels of the pixels. In this device, one pixel display region includes n divided pixels and if each pixel can be displayed with m gray levels, the areas of the pixels are set to form a geometric progression using m as a common ratio, whereby display with m.sup.n gray levels for one display region can be effected with high precision.
    • 液晶显示装置具有各自包括多个分割像素的多个像素显示区域的布置,并且能够以大量的灰度级进行显示。 每个划分的像素以至少两个灰度级别单独和选择地显示。 液晶装置还包括用于单独和选择性地启用分割像素的像素电极,以及灰度级设置电路,用于控制可分割像素的面积之和,由此设置像素的灰度级。 在该装置中,一个像素显示区域包括n个划分的像素,并且如果每个像素可以以m个灰度级显示,则将像素的区域设置为使用m作为公共比率形成几何级数,由此用mn灰度级显示 可以高精度地实现一个显示区域。