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    • 1. 发明专利
    • Liquid crystal display device
    • 液晶显示装置
    • JP2009003201A
    • 2009-01-08
    • JP2007164466
    • 2007-06-22
    • Tohoku Techno Brains CorpTohoku Univ国立大学法人東北大学株式会社東北テクノブレインズ
    • UCHIDA TATSUOMIYASHITA TETSUYA
    • G02F1/13
    • PROBLEM TO BE SOLVED: To provide a liquid crystal display device, in which the rise time from power-on to a normal display state of OCB (optically compensated birefringence) mode LCD can be shortened to be equal to that of TN(twisted nematic) mode LCD.
      SOLUTION: In the OCB mode liquid crystal display device, either one or both of the following means (1) and (2) are adapted. (1) An alignment holding voltage source 11 for continuously applying a voltage near a critical voltage V
      cr of spray-bend transition to a resting liquid crystal cell 1 is provided. (2) A liquid crystal 5 located in an electrode-free area (electrodeless area 21) is aligned to a high pretilt.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 解决问题的方案为了提供一种液晶显示装置,其中OCB(光学补偿双折射)模式LCD的通电到正常显示状态的上升时间可以缩短为等于TN( 扭曲向列)模式LCD。 解决方案:在OCB模式的液晶显示装置中,适应以下装置(1)和(2)中的一个或两个。 (1)提供了用于将喷射弯曲过渡的临界电压V SB> SB 附近的电压连续施加到静止液晶单元1的对准保持电压源11。 (2)位于无电极区域(无电极区域21)中的液晶5与高预倾角对准。 版权所有(C)2009,JPO&INPIT
    • 2. 发明专利
    • Rear projection display optical system limiting light emitting angle of projector
    • 后投影显示光学系统限制发光角度的投影仪
    • JP2006208553A
    • 2006-08-10
    • JP2005018122
    • 2005-01-26
    • Tohoku Techno Brains CorpTohoku Univ国立大学法人東北大学株式会社東北テクノブレインズ
    • UCHIDA TATSUOKATAGIRI BAKUKAWAKAMI TORUKURATOMI YUHEI
    • G03B21/10G02B17/00G03B21/28
    • PROBLEM TO BE SOLVED: To provide a rear projection display optical system limiting the light emitting angle of a projector capable of realizing a high-resolution and high-efficiency thinned rear projection display.
      SOLUTION: In the rear projection display optical system successively reflecting light from a picture display element 1 by a plurality of aspherical reflection plates 2
      1 to 2
      n and guiding it to a screen 3, a difference |θ
      max -θ
      min | between a maximum angle θ
      max and a minimum angle θ
      min in the emitting direction of light from the picture display element on a cross section longitudinally cutting the optical path of the optical system is within a range equal to or under an angle α decided from geometrical optics and equal to or above an angle β decided from wave optics, and the locus of the intersection of two light beams emitted from one point moving on all the surface of the picture display element at two angles θ
      max and θ
      min and reflected on the aspherical reflection plate 2
      n of a final stage forms an almost plane, and a screen surface is positioned within the range of the recessed and projecting parts of the almost plane.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供限制能够实现高分辨率和高效率薄型背投显示的投影仪的发光角度的背投显示光学系统。 解决方案:在后投影显示光学系统中,通过多个非球面反射板2 1 连续地将来自图像显示元件1的光反射到2 n 并将其引导 在最大角度θ max 与最小角度θ min 之间的差值¾θ <<<<< / SB>在纵向切割光学系统的光路的横截面上来自图像显示元件的光的发射方向处于等于或低于由几何光学决定并等于或大于角度β的角度α的范围内 由波形光学决定,并且以两个角度θ max 和θ min 从图像显示元件的所有表面上移动的一个点发射的两个光束的交点 并且反射在最终级的非球面反射板2上形成几乎平面,并且屏幕表面位于凹进和突出部分的范围内 几乎飞机。 版权所有(C)2006,JPO&NCIPI
    • 3. 发明专利
    • Optical system for rear projection display
    • 用于后投影显示的光学系统
    • JP2005274955A
    • 2005-10-06
    • JP2004087840
    • 2004-03-24
    • Tohoku Techno Brains CorpTatsuo Uchida龍男 内田株式会社東北テクノブレインズ
    • KATAGIRI BAKUISHINABE TAKAHIROUCHIDA TATSUO
    • G02B27/18G02B27/28G03B21/00G03B21/10G03B21/62
    • PROBLEM TO BE SOLVED: To provide an optical system for a rear projection display in which external light intruded into the optical system is not dispersed in the direction of an observer, a high contrast ratio is realized under a bright environment, and both of the high contrast ratio and high projector light using efficiency are attained under the bright environment.
      SOLUTION: In the optical system for the rear projection display which comprises a screen, a reflector mirror 5 for projecting the reflected light of projector light to the rear surface of the screen, and a projector 4 for projecting the projector light to the reflector 5, the screen is made of a screen 10 of multilayer structure consisting of a polarizer 1, a diffusion layer 2 and a 1/4 wavelength plate 3.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供一种用于后投影显示器的光学系统,其中入射到光学系统中的外部光不沿观察者的方向分散,在明亮的环境下实现高对比度,并且两者 在明亮的环境下实现高对比度和高投影光使用效率。 解决方案:在用于包括屏幕的背投显示器的光学系统中,用于将投影仪光的反射光投射到屏幕的后表面的反射镜5和用于将投影仪光投射到屏幕的投影仪4 反射器5,屏幕由由偏振器1,扩散层2和1/4波片3组成的多层结构的屏幕10制成。版权所有(C)2006,JPO&NCIPI
    • 5. 发明专利
    • Liquid crystal display
    • 液晶显示器
    • JP2008020929A
    • 2008-01-31
    • JP2007214030
    • 2007-08-20
    • Tohoku Techno Brains CorpTatsuo Uchida龍男 内田株式会社東北テクノブレインズ
    • UCHIDA TATSUOISHINABE TAKAHIROMIYASHITA TETSUYASHIBAZAKI MINORU
    • G02F1/13363G02B5/30
    • PROBLEM TO BE SOLVED: To provide a liquid crystal display which has a simpler configuration by optimizing a compensation film and/or further a liquid crystal layer, wherein light leakage in a black display is extremely little and tone reversal is not caused over a large visual angle range. SOLUTION: Light leakage is almost eliminated by giving refractive indices A, B (for ordinary light and extraordinary light, respectively), thickness D j , tilt angle β j , and an azimuth Φ j to a compensation film 5 (the i-th sheet of N sheets) so that the sum of retardations with the corresponding virtually divided elements of the liquid crystal layer 2 (a minute liquid crystal layer 7 having uniform alignment (the j-th layer of N divisions)) is substantially zero. Further, tone reversal is eliminated by setting the average tilt angle α av of the liquid crystal layer 2 to be in a range of θ 0 av 0 , wherein θ 0 is a refraction angle at the designed maximum incident angle Θ i . COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:通过优化补偿膜和/或液晶层来提供具有更简单配置的液晶显示器,其中黑色显示器中的漏光极少,并且不会引起色调反转 视角范围很大。

      解决方案:通过给出折射率A,B(分别用于普通光和非常光),厚度D j ,倾斜角β j 几乎消除了漏光 和方位角Φ j 到补偿膜5(第N页的N张片),使得延迟与液晶层2的相应虚拟分割元素的和(微分液体 具有均匀取向的晶体层7(N分割的第j层)基本上为零。 此外,通过将液晶层2的平均倾斜角α av 设定在θ av 的范围内来消除色调反转, SB> <90-θ 0 ,其中θ 0 是设计的最大入射角θ的折射角。 版权所有(C)2008,JPO&INPIT

    • 7. 发明专利
    • Method and apparatus for measuring coefficient of viscosity of liquid crystal
    • 用于测量液晶粘度系数的方法和装置
    • JP2007003224A
    • 2007-01-11
    • JP2005180679
    • 2005-06-21
    • Tohoku Techno Brains CorpTohoku Univ国立大学法人東北大学株式会社東北テクノブレインズ
    • MIYASHITA TETSUYAUCHIDA TATSUOKURATOMI YUHEI
    • G01N11/00G01N21/21G01N21/59
    • PROBLEM TO BE SOLVED: To provide a method and an apparatus for measuring a coefficient of the viscosity of a liquid crystal capable of measuring easily and highly accurately the rotational coefficient γ
      1 of viscosity and coefficients η
      1 , η
      2 of shear viscosity of Miesowicz of an N-type liquid crystal cell.
      SOLUTION: Observation of a response to an applied step-up voltage is performed once or in a plurality of times by changing a voltage range of the step-up voltage in the state where each optical axis of either of two orthogonal polarizers arranged on both sides of a liquid crystal cell sample having a homeotropic structure and of the sample is adjusted in parallel, to thereby determine a voltage range wherein a light leakage is removed. Then, the value of the rotational coefficient γ
      1 of viscosity is determined from an ON-response characteristic measured by the step-up voltage in the determined voltage range in the state where each optical axis is crossed at about 45°, and then each value of the coefficients η
      1 , η
      2 of shear viscosity is determined from an OFF-response characteristic measured by a step-down voltage in a proper voltage range.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:为了提供能够容易且高精度地测量粘度和系数η的旋转系数γ 1 的液晶粘度系数的测量方法和装置, N型液晶单元的Miesowicz的剪切粘度的 1 ,η 2 。 解决方案:通过在布置两个正交偏振器中的任一个的每个光轴的状态下改变升压电压的电压范围来执行对所施加的升压电压的响应的观察一次或多次 在具有垂直结构的液晶单元样品和样品的两侧并联调节,从而确定去除了漏光的电压范围。 然后,在每个光轴交叉的状态下,在由确定的电压范围内的升压电压测量的ON-响应特性来确定粘度的旋转系数γ 1 的值 45°,然后从适当的降压电压测量的OFF响应特性确定剪切粘度的系数η 1 ,η 2 的每个值 电压范围 版权所有(C)2007,JPO&INPIT
    • 8. 发明专利
    • Device for evaluating moving picture performance
    • 评估移动图像性能的设备
    • JP2006042376A
    • 2006-02-09
    • JP2005234197
    • 2005-08-12
    • Tohoku Techno Brains CorpTatsuo Uchida龍男 内田株式会社東北テクノブレインズ
    • UCHIDA TATSUOKOMA TOKUO
    • H04N17/04G02F1/13
    • PROBLEM TO BE SOLVED: To provide a device for evaluating moving picture performance which can properly and efficiently evaluate the moving picture performance of a display device of various display systems.
      SOLUTION: The device comprises a display driver 3 that displays a mark image 2 on a display device 1 being an object of evaluation, a camera 4 that photographs the mark image 2, a camera mover 5 that moves and/or rotates the camera 4, and a photographing controller 6 that synchronously controls the display driver 3, the camera 4 and the camera mover 5 to move the mark image 2 at a specified moving picture speed V, bring a camera center 10 to the moving mark image 2 and take a photograph at a specified photographing time (shutter speed), corresponding to a longer time than the integration time of eyes.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种用于评估运动画面性能的装置,其可以适当且有效地评估各种显示系统的显示装置的运动画面性能。 解决方案:该装置包括在作为评估对象的显示装置1上显示标记图像2的显示驱动器3,拍摄标记图像2的相机4,移动和/或旋转标记图像2的相机移动器5 照相机4和拍摄控制器6,其同步地控制显示驱动器3,相机4和相机移动器5以指定的运动图像速度V移动标记图像2,将相机中心10带到移动标记图像2, 在指定的拍摄时间(快门速度)下拍摄照片,对应于比眼睛的积分时间更长的时间。 版权所有(C)2006,JPO&NCIPI