公开(公告)号：US5465168A

公开(公告)日：1995-11-07

申请号：US10560

申请日：1993-01-28

申请人： Mitsuhiro Koden ,  Akira Tagawa ,  Hitoshi Takeda ,  Hirofumi Katsuse ,  Makoto Shiomi ,  Takaji Numao ,  Hiroshi Gouda ,  Masayuki Katakami ,  Naofumi Kondo ,  Mikio Katayama

发明人： Mitsuhiro Koden ,  Akira Tagawa ,  Hitoshi Takeda ,  Hirofumi Katsuse ,  Makoto Shiomi ,  Takaji Numao ,  Hiroshi Gouda ,  Masayuki Katakami ,  Naofumi Kondo ,  Mikio Katayama

IPC分类号： G02F1/141 ,  G09G3/20 ,  G09G3/36 ,  G02F1/1343 ,  G02F1/13

CPC分类号： G02F1/141 ,  G09G3/3629 ,  G09G3/3651 ,  G02F2203/30 ,  G09G2310/06 ,  G09G2320/0247 ,  G09G3/2011 ,  G09G3/207

摘要： A liquid crystal display includes a liquid crystal cell including a pair of substrates opposite to each other, each substrate having an electrode film and an orientation control layer thereon, and a ferroelectric liquid crystal filled between the substrates; and a pair of polarizing plates which are provided opposite to each other in the state of "cross nicol" on both sides of the liquid crystal cell; the ferroelectric liquid crystal being bistable in the liquid crystal cell, the polarizing plates being oriented in such a manner that one of their polarizing directions conforms to one of extinction positions of the ferroelectric liquid crystal under no electric field, the liquid crystal cell being applied with an alternating voltage for changing which has a positive portion which gives an apparent tilt angle from one stable state, and a negative portion which gives an apparent tilt angle relative to the other stable state, resulting in display with gray scale.

摘要翻译： 液晶显示器包括：液晶单元，其包括彼此相对的一对基板，每个基板上具有电极膜和取向控制层;以及填充在基板之间的铁电液晶; 以及在液晶单元的两侧呈“十字形尼科”状态相对设置的一对偏光板; 所述铁电液晶在所述液晶单元中是双稳态的，所述偏振片的取向方式为使得所述偏振方向中的一个偏振方向在无电场下符合所述铁电液晶的消光位置之一，所述液晶单元被施加 用于改变的交流电压具有从一个稳定状态给出明显倾斜角的正部分，以及相对于另一个稳定状态给出明显倾斜角的负部分，导致以灰度显示。

公开(公告)号：US5691783A

公开(公告)日：1997-11-25

申请号：US269450

申请日：1994-06-30

申请人： Takaji Numao ,  Akira Tagawa ,  Kazuhiko Tamai ,  Mitsuhiro Koden ,  Tokihiko Shinomiya

发明人： Takaji Numao ,  Akira Tagawa ,  Kazuhiko Tamai ,  Mitsuhiro Koden ,  Tokihiko Shinomiya

IPC分类号： G02F1/133 ,  G09G3/20 ,  G09G3/36 ,  G02F1/136 ,  G02F1/141

CPC分类号： G09G3/3655 ,  G09G3/3651 ,  G09G3/3659 ,  G09G2300/0814 ,  G09G2300/0852 ,  G09G2310/0235 ,  G09G2310/0251 ,  G09G2310/06 ,  G09G3/2011

摘要： A ferroelectric liquid crystal display device includes a plurality of pixels, and each of the plurality of pixels includes ferroelectric liquid crystal material having ferroelectric liquid crystal molecules therein capable of being aligned in a first stable alignment state, whereby a principal axis of each of the molecules is aligned at an angle .omega. with respect to a central line, and of being aligned in a second stable alignment state, whereby the principal axis of each of the molecules is aligned at an angle -.omega. with respect to the central line, and a pair of polarizers on opposite sides of the ferroelectric liquid crystal material, a polarizing axis of one of the polarizers being substantially aligned with the central line.

摘要翻译： 铁电液晶显示装置包括多个像素，并且所述多个像素中的每一个包括其中能够以第一稳定取向状态排列的铁电液晶分子的铁电液晶材料，由此每个分子的主轴 以相对于中心线的角度ω对准，并且以第二稳定取向状态对准，由此每个分子的主轴相对于中心线以角度ω对准，并且一对 在铁电液晶材料的相对侧上的偏振器的偏振轴基本上与中心线对准。

公开(公告)号：US6115021A

公开(公告)日：2000-09-05

申请号：US497692

申请日：1995-06-30

申请人： Keisaku Nonomura ,  Takaji Numao ,  Hirofumi Katsuse

发明人： Keisaku Nonomura ,  Takaji Numao ,  Hirofumi Katsuse

IPC分类号： G02F1/133 ,  G09G3/36 ,  H04N3/12

CPC分类号： H04N3/127 ,  G09G3/3629 ,  G02F1/133382 ,  G09G2310/0227 ,  G09G2310/06 ,  G09G2320/041

摘要： A ferroelectric liquid crystal panel including a plurality of scanning electrodes, a plurality of signal electrodes crossing the scanning electrodes, a ferroelectric liquid crystal material having two stable orientation states corresponding to different memory angles and provided at intersections of the plurality of scanning electrodes and the plurality of signal electrodes to form a plurality of pixels is driven. The plurality of pixels each have a first threshold characteristic regarding a voltage for switching a display state of the pixel into a non-display state and a second threshold characteristic regarding a voltage for switching the non-display state of the pixel into the display state. An apparatus for driving the ferroelectric liquid crystal panel includes a temperature sensor detecting an operation temperature of the ferroelectric liquid crystal panel; and signal output for outputting a driving signal based on a field frequency fixed at a prescribed reference frequency and a frame frequency determined in correspondence with the operation temperature of the ferroelectric liquid crystal panel detected by the temperature sensor, and writing the driving signal into each of the plurality of pixels at a writing time corresponding to a response time of each of the plurality of pixels changing in accordance with the operation temperature.

摘要翻译： 一种铁电液晶面板，包括多个扫描电极，与扫描电极交叉的多个信号电极，具有对应于不同存储角度的两个稳定取向状态的铁电液晶材料，并且设置在多个扫描电极和多个扫描电极的交点处 的信号电极以形成多个像素被驱动。 多个像素各自具有关于用于将像素的显示状态切换为非显示状态的电压的第一阈值特性和关于将像素的非显示状态切换到显示状态的电压的第二阈值特性。 用于驱动铁电液晶面板的装置包括：检测铁电液晶面板的工作温度的温度传感器; 以及信号输出，用于基于以规定的参考频率固定的场频率和与由温度传感器检测的铁电液晶面板的操作温度相对应地确定的帧频率输出驱动信号，并将驱动信号写入 所述多个像素在写入时间对应于所述多个像素中的每一个的响应时间根据所述操作温度而改变。

公开(公告)号：US5404237A

公开(公告)日：1995-04-04

申请号：US053787

申请日：1993-04-28

申请人： Hirofumi Katsuse ,  Takaji Numao

发明人： Hirofumi Katsuse ,  Takaji Numao

IPC分类号： G02F1/141 ,  G09G3/36 ,  G02F1/1343 ,  G02F1/13

CPC分类号： G09G3/3629 ,  G02F1/1416 ,  G09G2310/06

摘要： A ferroelectric liquid crystal display for improving switching time and contrast comprising a ferroelectric liquid crystal having a C2U orientation, a negative dielectric anisotropy and driven by a rewriting voltage for turning a pixel on and off which is smaller than the non-rewriting voltage.

摘要翻译： 一种用于改善开关时间和对比度的铁电液晶显示器，其包括具有C2U取向的铁电液晶，负介电各向异性，并且由用于使像素的开启和关闭的重写电压驱动，所述重写电压小于非重写电压。

公开(公告)号：US20080136795A1

公开(公告)日：2008-06-12

申请号：US11795305

申请日：2005-11-16

申请人： Takaji Numao ,  Akira Tagawa

发明人： Takaji Numao ,  Akira Tagawa

IPC分类号： G06F3/038

CPC分类号： G09G3/3233 ,  G09G2300/0465 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0248 ,  G09G2310/0262 ,  G09G2320/043

摘要： In a pixel circuit Aij, a driver TFT Q1, a switching TFT Q3, and an OLED EL1 are connected in series between a power supply line Vp and a common cathode Vcom. A capacitor C1 is connected between the gate of the driver TFT Q1 and the voltage line Ui. The switching TFT Q2 is connected between the gate and drain of the driver TFT Q1. A capacitor C3 is connected between the drain of the driver TFT Q1 and a source line Sj.

摘要翻译： 在像素电路Aij中，驱动TFT Q 1，开关TFT Q 3和OLED EL 1串联连接在电源线Vp和公共阴极Vcom之间。 电容器C 1连接在驱动TFT Q 1的栅极和电压线Ui之间。 开关TFT Q 2连接在驱动TFT Q 1的栅极和漏极之间。 电容器C 3连接在驱动TFT Q 1的漏极和源极线Sj之间。

公开(公告)号：US07046220B2

公开(公告)日：2006-05-16

申请号：US10282714

申请日：2002-10-29

申请人： Akira Tagawa ,  Takaji Numao

发明人： Akira Tagawa ,  Takaji Numao

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G2300/0842 ,  G09G2310/0262 ,  G09G2320/029

摘要： A display in accordance with the present invention includes: photoelectric elements as pixels; scan signal lines for sequentially driving the photoelectric elements; video data signal lines for supplying video data signals to the photoelectric elements; and drive-switching elements, each provided for a different photoelectric element, for supplying, to the photoelectric elements, currents matching with the video data signals supplied from the video data signal lines, and further includes path selector switching elements, connected to the respective drive-switching elements, for selecting one of current injecting paths according to a scan signal from the scan signal lines, and a current measuring circuit to either one of the current injecting paths.

公开(公告)号：US07990347B2

公开(公告)日：2011-08-02

申请号：US11918652

申请日：2006-07-07

申请人： Takaji Numao

发明人： Takaji Numao

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/0256 ,  G09G2320/043

摘要： In one embodiment, a display device of the present invention includes capacitors provided between a gate and a source of a driver TFT. During a select period, a voltage is fed to the gate terminal of the driver TFT, and a voltage is fed to the source terminal of the driver TFT. Thereafter, during a threshold correction period, the gate voltage of the driver TFT is retained to make the source voltage of the driver TFT equal to Vda−Vth (

摘要翻译： 在一个实施例中，本发明的显示装置包括设置在驱动器TFT的栅极和源极之间的电容器。 在选择周期期间，将电压馈送到驱动TFT的栅极端子，并将电压馈送到驱动器TFT的源极端子。 此后，在阈值校正期间，保持驱动TFT的栅极电压，使驱动TFT的源极电压为Vda-Vth（

公开(公告)号：US20110122176A1

公开(公告)日：2011-05-26

申请号：US13054278

申请日：2009-06-08

申请人： Takaji Numao

发明人： Takaji Numao

IPC分类号： G09G5/10 ,  G09G3/36

CPC分类号： G09G3/3607 ,  G09G3/3406 ,  G09G2310/0235

摘要： Transmittances of red, blue and green filters included in a display device are increased, and in a first field period, after a signal voltage (Vg) is provided to a green sub-pixel (G), a green CCFL is turned on, whereas red and blue CCFLs are turned off. At this time, only light from the green CCFL transmitted through the green sub-pixel (G) is transmitted through a liquid crystal panel. Also, in a second field period, after signal voltages (Vr and Vb) are provided to red and blue sub-pixels (R and B), respectively, the red and blue CCFLs are turned on, and the green CCFL is turned off. At this time, only light from the red and blue CCFLs respectively transmitted through the red and blue sub-pixels (R and B) is transmitted through the liquid crystal panel. Thus, it is possible to provide a display device less susceptible to color purity reduction even if transmittances of color filters are increased.

摘要翻译： 包括在显示装置中的红色，蓝色和绿色滤色器的透过率增加，并且在第一场周期中，在向绿色子像素（G）提供信号电压（Vg）之后，绿色CCFL导通，而 红色和蓝色CCFL关闭。 此时，仅透过绿色子像素（G）的绿色CCFL的光透射通过液晶面板。 此外，在第二场期间，在分别向红色和蓝色子像素（R和B）提供信号电压（Vr和Vb）之后，红色和蓝色CCFL导通，绿色CCFL关闭。 此时，仅分别透过红色和蓝色子像素（R和B）的红色和蓝色CCFL的光透过液晶面板。 因此，即使增加滤色器的透射率，也可以提供对颜色纯度降低不太敏感的显示装置。

公开(公告)号：US07800564B2

公开(公告)日：2010-09-21

申请号：US10550950

申请日：2003-10-31

申请人： Takaji Numao

发明人： Takaji Numao

IPC分类号： G09G3/32

CPC分类号： G09G3/325 ,  G09G3/3275 ,  G09G2300/0417 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0262 ,  G09G2320/0223 ,  G09G2320/029 ,  G09G2320/043

摘要： A switching transistor 3 is provided between a gate terminal of a driving TFT 1 and a drain terminal thereof. A first capacitor 2 is provided between the gate terminal of the driving TFT 1 and a source terminal thereof. The current control terminal of the driving TFT 1 is connected to a first terminal of a second capacitor 7. A second terminal of the second capacitor 7 is connected to the drain terminal of the driving TFT 1 via a switching transistor 9, and to a predetermined voltage line Va via a switching transistor 8. This allows restraint of variation of a current flowing, during a non-selection period, through a current driving light emitting element of a display apparatus, the current variation being caused by threshold voltage variation and mobility variation of the driving TFT. A specific example of the display apparatus including such a current driving light emitting element is an organic EL display apparatus.

摘要翻译： 开关晶体管3设置在驱动TFT1的栅极端子和漏极端子之间。 第一电容器2设置在驱动TFT 1的栅极端子和源极端子之间。 驱动用TFT1的电流控制端子与第二电容器7的第一端子连接。第二电容器7的第二端子经由开关晶体管9与驱动用TFT1的漏极端子连接， 电压线Va经由开关晶体管8.这样可以抑制在非选择期间流过显示装置的电流驱动发光元件的电流的变化，电流变化由阈值电压变化和迁移率变化引起 的驱动TFT。 包括这种电流驱动发光元件的显示装置的具体示例是有机EL显示装置。

公开(公告)号：US07786959B2

公开(公告)日：2010-08-31

申请号：US11129297

申请日：2005-05-16

申请人： Takaji Numao

发明人： Takaji Numao

IPC分类号： G09G3/30

CPC分类号： G09G3/325 ,  G09G3/2022 ,  G09G3/3283 ,  G09G2300/0408 ,  G09G2300/0417 ,  G09G2300/0809 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2320/043

摘要： When the transistor Q3 is OFF, a predetermined potential is supplied to a potential wire Ui such that a switching transistor Q2 becomes ON. This changes a gate potential of a driving transistor Q1 from an ON potential to a threshold potential. Thereafter, the transistor Q2 is turned OFF, with the result that the potential of the potential wire Ui is changed (in cases where the transistor Q1 is a p-type transistor, the potential is decreased). With this, the transistor Q1 allows a current to constantly flows therethrough, irrespective of the threshold potential. This shortens time for setting an output current of the driving TFT for driving a current driving type display element.

摘要翻译： 当晶体管Q3截止时，将预定电位提供给电位线Ui，使得开关晶体管Q2导通。 这将驱动晶体管Q1的栅极电位从导通电位改变为阈值电位。 此后，晶体管Q2截止，电位线Ui的电位变化（在晶体管Q1为p型晶体管的情况下，电位降低）。 由此，不管阈值电位如何，晶体管Q1允许电流恒定地流过。 这缩短了设置用于驱动当前驱动型显示元件的驱动TFT的输出电流的时间。