公开(公告)号：US06208403B1

公开(公告)日：2001-03-27

申请号：US09556655

申请日：2000-04-24

申请人： Tomio Tanaka ,  Tetsushi Yoshida ,  Jun Ogura ,  Satoru Shimoda

发明人： Tomio Tanaka ,  Tetsushi Yoshida ,  Jun Ogura ,  Satoru Shimoda

IPC分类号： G02F11335

CPC分类号： G02F1/141 ,  G02F2001/1412

摘要： An antiferroelectric liquid crystal display device includes: an active matrix type LC cell and an antiferroelectric liquid crystal sealed in the cell. Liquid crystal molecules aligned to one of a first aligning direction and a second aligning direction are aligned in the other aligning direction in accordance with an applied voltage, thus forming a plurality of regions of different alignment states in a range shorter than a wavelength of light in a visible light band, and directions of said directors are changed in accordance with a ratio of regions in a first alignment state to regions in a second alignment state. The liquid crystal molecules may behave along a predetermined cone by a phase transition precursor in accordance with an applied voltage. The liquid crystal molecules may behave so as to be inclined in a direction perpendicular to an electric field, in accordance with an applied voltage.

摘要翻译： 反铁电液晶显示装置包括：密封在电池中的有源矩阵型LC单元和反铁电液晶。 与第一对准方向和第二对准方向中的一个对准的液晶分子根据施加的电压在另一个排列方向上排列，从而在比光的波长短的范围内形成多个不同取向状态的区域 可见光带和所述导向器的方向根据第一取向状态的区域与第二取向状态的区域的比率而改变。 根据施加的电压，液晶分子可以通过相变前体沿预定锥体表现。 根据施加的电压，液晶分子可以表现为在垂直于电场的方向上倾斜。

公开(公告)号：US6163360A

公开(公告)日：2000-12-19

申请号：US878812

申请日：1997-06-19

申请人： Tomio Tanaka ,  Jun Ogura ,  Satoru Shimoda ,  Tetsushi Yoshida

发明人： Tomio Tanaka ,  Jun Ogura ,  Satoru Shimoda ,  Tetsushi Yoshida

IPC分类号： G02F1/1335 ,  G02F1/141 ,  G09G3/20 ,  G09G3/36 ,  C09K19/02

CPC分类号： G02F1/141 ,  G02F2001/133531 ,  G02F2001/1412 ,  G02F2203/30 ,  G09G3/2011 ,  G09G3/3651 ,  G09G3/3688 ,  G09G2310/0251 ,  G09G2310/027 ,  G09G2310/061 ,  G09G2320/0204 ,  G09G2320/041

摘要： Placed between a pair of substrates is a liquid crystal which has a first ferroelectric phase where liquid crystal molecules are aligned substantially in a first direction in accordance with an applied voltage, a second ferroelectric phase where the liquid crystal molecules are aligned substantially in a second direction in accordance with an applied voltage, and an intermediate alignment state where the director of the liquid crystal is directed between the first and second directions. The liquid crystal in use is selected so that the first and second directions intersect each other at an angle of greater than 45.degree.. The transmission axis of one of a pair of polarization plates is set inclined to an intermediate direction between the first and second directions by 22.5.degree., and the optical axis of the other polarization plate is set perpendicular to the transmission axis of the former polarization plate. A voltage of a range which does not set the liquid crystal in a ferroelectric phase and can provide maximum and minimum transmittances is applied between electrodes which are so arranged as to sandwich a layer of the liquid crystal.

摘要翻译： 放置在一对基板之间的液晶是具有第一铁电相的液晶，其中液晶分子基本上按照施加的电压在第一方向上取向，液晶分子基本上沿第二方向排列的第二铁电相 根据施加电压，以及液晶指向器在第一和第二方向之间的中间对准状态。 选择使用的液晶，使得第一和第二方向以大于45°的角度相交。 一对偏振板中的一个的透射轴被设定为在第一和第二方向之间的中间方向倾斜22.5°，另一个偏振板的光轴垂直于前一个偏振板的透射轴设置。 在电极之间施加不设置铁电相中的液晶并且可以提供最大和最小透射率的范围的电压，其被布置为夹着液晶层。

公开(公告)号：US6122034A

公开(公告)日：2000-09-19

申请号：US141495

申请日：1998-08-27

申请人： Tomio Tanaka ,  Tetsushi Yoshida ,  Jun Ogura ,  Satoru Shimoda

发明人： Tomio Tanaka ,  Tetsushi Yoshida ,  Jun Ogura ,  Satoru Shimoda

IPC分类号： G02F1/141 ,  G02F1/13 ,  G02F1/1335

CPC分类号： G02F1/141 ,  G02F2001/1412

摘要： An antiferroelectric liquid crystal display device includes: an active matrix type LC cell and an antiferroelectric liquid crystal sealed in the cell. Liquid crystal molecules aligned to one of a first aligning direction and a second aligning direction are aligned in the other aligning direction in accordance with an applied voltage, thus forming a plurality of regions of different alignment states in a range shorter than a wavelength of light in a visible light band, and directions of said directors are changed in accordance with a ratio of regions in a first alignment state to regions in a second alignment state. The liquid crystal molecules may behave along a predetermined cone by a phase transition precursor in accordance with an applied voltage. The liquid crystal molecules may behave so as to be inclined in a direction perpendicular to an electric field, in accordance with an applied voltage.

摘要翻译： 反铁电液晶显示装置包括：密封在电池中的有源矩阵型LC单元和反铁电液晶。 与第一对准方向和第二对准方向中的一个对准的液晶分子根据施加的电压在另一个排列方向上排列，从而在比光的波长短的范围内形成多个不同取向状态的区域 可见光带和所述导向器的方向根据第一取向状态的区域与第二取向状态的区域的比率而改变。 根据施加的电压，液晶分子可以通过相变前体沿预定锥体表现。 根据施加的电压，液晶分子可以表现为在垂直于电场的方向上倾斜。

公开(公告)号：US5847799A

公开(公告)日：1998-12-08

申请号：US657017

申请日：1996-05-28

申请人： Tomio Tanaka ,  Tetsushi Yoshida ,  Jun Ogura ,  Satoru Shimoda

发明人： Tomio Tanaka ,  Tetsushi Yoshida ,  Jun Ogura ,  Satoru Shimoda

IPC分类号： G02F1/141 ,  G02F1/1335 ,  G02F1/13

CPC分类号： G02F1/141 ,  G02F2001/1412

摘要： An antiferroelectric liquid crystal display device includes: an active matrix type LC cell and an antiferroelectric liquid crystal sealed in the cell. Liquid crystal molecules aligned to one of a first aligning direction and a second aligning direction are aligned in the other aligning direction in accordance with an applied voltage, thus forming a plurality of regions of different alignment states in a range shorter than a wavelength of light in a visible light band, and directions of said directors are changed in accordance with a ratio of regions in a first alignment state to regions in a second alignment state. The liquid crystal molecules may behave along a predetermined cone by a phase transition precursor in accordance with an applied voltage. The liquid crystal molecules may behave so as to be inclined in a direction perpendicular to an electric field, in accordance with an applied voltage.

公开(公告)号：US06175401B1

公开(公告)日：2001-01-16

申请号：US09067914

申请日：1998-05-01

申请人： Tomio Tanaka ,  Tetsushi Yoshida ,  Jun Ogura ,  Manabu Takei

发明人： Tomio Tanaka ,  Tetsushi Yoshida ,  Jun Ogura ,  Manabu Takei

IPC分类号： G02F1141

CPC分类号： G02F1/1416 ,  G02F2203/30

摘要： A liquid crystal material which exhibits an antiferroelectric phase while the liquid crystal material is in a bulk state, is sealed between substrates. The liquid crystal layer sealed between the substrates exhibits a mixed phase wherein the liquid crystal layer contains liquid crystal molecules aligned in a plurality of alignment states which differ from each other in the alignment order of the liquid crystal molecules forming adjoining smectic layers. The direction of the director of the liquid crystal layer varies continuously in accordance with the polarity and magnitude of a voltage applied to the liquid crystal layer. Gradation display can be achieved by arranging polarization plates such that the substrates are sandwiched therebetween.

摘要翻译： 在液晶材料为块状时显示反铁电相的液晶材料被密封在基板之间。 密封在基板之间的液晶层呈现混合相，其中液晶层包含以形成相邻的近晶层的液晶分子的取向顺序彼此不同的多个取向状态的液晶分子。 液晶层的导向器的方向根据施加到液晶层的电压的极性和大小而连续变化。 可以通过布置偏振板使得基板夹在其间来实现渐变显示。

公开(公告)号：US6091478A

公开(公告)日：2000-07-18

申请号：US73633

申请日：1998-05-06

申请人： Tomio Tanaka ,  Tetsushi Yoshida ,  Manabu Takei ,  Jun Ogura

发明人： Tomio Tanaka ,  Tetsushi Yoshida ,  Manabu Takei ,  Jun Ogura

IPC分类号： G02F1/136 ,  G02F1/133 ,  G02F1/1368 ,  G02F1/141 ,  G09F9/35 ,  G09G3/36 ,  C09K19/02

CPC分类号： G02F1/141 ,  G09G3/3651 ,  G02F2001/1412 ,  G09G3/3688

摘要： A liquid crystal layer is sealed between a pair of substrates on which opposite electrodes are formed. The liquid crystal layer is formed of a liquid crystal which exhibits an antiferroelectric phase while the liquid crystal is in a bulk state. When the liquid crystal is sealed between the substrates as the liquid crystal layer, the liquid crystal exhibits a ferrielectric phase wherein liquid crystal molecules aligned in a first state of being aligned in a first direction and liquid crystal molecules aligned in a second state of being aligned in a second direction are present in predetermined order. In accordance with the polarity and magnitude of a voltage applied between the opposite electrodes, the ratio of the number of liquid crystal molecules aligned in the first state to the number of liquid crystal molecules aligned in the second state varies such that the direction of the director of the liquid crystal layer varies continuously. Gradation display can be achieved by detecting a variation in the director through the use of a pair of polarization plates arranged in a crossed Nicols fashion.

摘要翻译： 液晶层被密封在形成相对电极的一对基板之间。 液晶层在液晶处于大量状态时由表现出反铁电相的液晶形成。 当作为液晶层将液晶密封在基板之间时，液晶呈现电介质相，其中液晶分子在第一方向上排列成第一状态，液晶分子在第二状态下排列成对准 在第二方向上以预定顺序存在。 根据施加在相对电极之间的电压的极性和大小，在第一状态下排列的液晶分子的数量与在第二状态中排列的液晶分子的数量的比率变化，导体的方向 的液晶层连续变化。 可以通过使用以正交尼科尔方式布置的一对偏光板来检测导片的变化来实现渐变显示。

公开(公告)号：US6046788A

公开(公告)日：2000-04-04

申请号：US73636

申请日：1998-05-06

申请人： Tomio Tanaka ,  Tetsushi Yoshida ,  Manabu Takei ,  Jun Ogura

发明人： Tomio Tanaka ,  Tetsushi Yoshida ,  Manabu Takei ,  Jun Ogura

IPC分类号： G02F1/1337 ,  G02F1/133 ,  G02F1/141 ,  G09F9/35

CPC分类号： G02F1/141

摘要： A liquid crystal material is sealed between substrates. The liquid crystal material exhibits an antiferroelectric phase while the liquid crystal is in a bulk state. In the liquid crystal layer sealed between the substrates, due to aligning forces of alignment films, liquid crystal molecules are aligned in a state wherein there is no correlation in molecular order between adjoining smectic layers, and the director of the liquid crystal layer is substantially coincident with the direction of a normal line of the smectic layers. The director varies continuously in accordance with the polarity and magnitude of a voltage applied between electrodes formed on the substrates. Arranging polarization plates so that the substrates are sandwiched therebetween enables a gradation to be displayed.

摘要翻译： 液晶材料被密封在基板之间。 当液晶处于大量状态时，液晶材料呈现反铁电相。 在密封在基板之间的液晶层中，由于取向膜的取向力，液晶分子在相邻的近晶层之间的分子顺序无相关性的状态下排列，液晶层的指向基本一致 随着近晶层的正常线的方向。 导向器根据在基板上形成的电极之间施加的电压的极性和大小而连续变化。 排列偏光板使基板夹在两者之间能够显示灰度。

公开(公告)号：US6151090A

公开(公告)日：2000-11-21

申请号：US672380

申请日：1996-05-28

申请人： Tomio Tanaka ,  Jun Ogura ,  Tetsushi Yoshida

发明人： Tomio Tanaka ,  Jun Ogura ,  Tetsushi Yoshida

IPC分类号： G02F1/1337 ,  G02F1/141 ,  G02F1/13

CPC分类号： G02F1/1337 ,  G02F1/133784 ,  G02F1/141 ,  G02F2001/133749 ,  G02F2001/1412

摘要： A liquid crystal cell is formed by bonding a first substrate on which a first electrode and a first aligning film are formed, and a second substrate on which a second electrode and a second aligning film are formed by a seal member. A liquid crystal is filled in the liquid crystal cell. The thicknesses of the aligning films are set to 10 nm to 35 nm. An aligning treatment is performed twice on each of the aligning films in the opposite directions. The first aligning treatment is performed to give a pretilt angle of 5 degrees to the liquid crystal, and the second aligning treatment is performed to give a pretilt angle of 6 degrees to the liquid crystal, with the result that a pretilt angle of 1 degree is actually given to the liquid crystal. The glass-transition temperatures of the aligning films are selected to be about 250.degree. C., so that the aligning films are not transformed at the time of baking the seal member.

摘要翻译： 通过接合形成有第一电极和第一取向膜的第一基板和通过密封构件形成有第二电极和第二取向膜的第二基板形成液晶单元。 在液晶单元中填充有液晶。 取向膜的厚度设定为10nm〜35nm。 在每个取向膜上沿相反方向进行两次对准处理。 进行第一对准处理以给出与液晶5度的预倾斜角度，并且进行第二对准处理以给出与液晶6度的预倾角，结果是预倾角为1度 实际上给了液晶。 选择取向膜的玻璃化转变温度为约250℃，使得在烘烤密封构件时不会使取向膜变形。

公开(公告)号：US5963187A

公开(公告)日：1999-10-05

申请号：US622091

申请日：1996-03-26

申请人： Tomio Tanaka ,  Tetsushi Yoshida ,  Katsuhito Sakamoto ,  Jun Ogura

发明人： Tomio Tanaka ,  Tetsushi Yoshida ,  Katsuhito Sakamoto ,  Jun Ogura

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

CPC分类号： G02F1/141 ,  G09G3/3648 ,  G02F2001/1412 ,  G09G3/2011 ,  G09G3/3614

摘要： In a TFT liquid crystal display device using a DHF liquid crystal, the DHF liquid crystal is alienable to a first alignment state in which liquid crystal molecules are substantially aligned to a first direction, to a second alignment state in which the liquid crystal molecules are substantially aligned to a second direction and to an arbitrary intermediate alignment state between the first and second alignment states, in accordance with a voltage applied between the pixel electrodes and the opposing electrode. One of a pair of polarization plates has an optical axis set in substantially an intermediate direction between the first and second directions. The optical axis of the other polarization plate is set perpendicular to the optical axis of the former polarization plate. A pulse having a voltage whose absolute value corresponds to a display gradation and whose polarity changes frame by frame is applied to the DHF liquid crystal for each pixel in the selection period of that pixel. A single pulse is applied for a single image signal.

摘要翻译： 在使用DHF液晶的TFT液晶显示装置中，DHF液晶与液晶分子基本上与第一方向对准的第一取向状态与液晶分子基本上对准的第二取向状态不可分离 根据施加在像素电极和对置电极之间的电压，在第一方向和第二取向状态之间的任意的中间取向状态下对准第二方向。 一对偏振板中的一个具有在第一和第二方向之间的大致中间方向上设置的光轴。 另一个偏振板的光轴垂直于前一个偏振板的光轴设置。 其绝对值对应于显示灰度并且其极性逐帧改变的电压被施加到该像素的选择周期中的每个像素的DHF液晶。 对单个图像信号应用单个脉冲。

公开(公告)号：US6014195A

公开(公告)日：2000-01-11

申请号：US709210

申请日：1996-08-29

申请人： Katsuhito Sakamoto ,  Zenta Kikuchi ,  Satoru Shimoda ,  Hisashi Aoki ,  Soichi Sato ,  Tetsushi Yoshida

发明人： Katsuhito Sakamoto ,  Zenta Kikuchi ,  Satoru Shimoda ,  Hisashi Aoki ,  Soichi Sato ,  Tetsushi Yoshida

IPC分类号： G02F1/1335 ,  G02F1/13363 ,  G02F1/139 ,  G09G3/36 ,  G02F1/1347

CPC分类号： G02F1/1393 ,  G02F1/133512 ,  G02F1/133553 ,  G02F1/13363 ,  G02F1/1396 ,  G02F2001/1398 ,  G02F2203/34 ,  G09G2300/0491 ,  G09G3/3607

摘要： A liquid crystal display device, for displaying pure white, has a first substrate having first electrodes formed thereon; a second substrate positioned to face the first substrate and having second electrodes formed thereon; a liquid crystal sealed between the first and second substrates; and first and second polarization plates arranged to sandwich the first and second substrates and having such polarization characteristics that when the first and second polarization plates are placed one on the other in such a way as to have substantially perpendicular transmission axes, a value acquired by dividing a transmittance of light with a wavelength of 500 nm by a transmittance of light with a wavelength of 440 nm becomes substantially smaller than 0.4. The first and second polarization plates have optical characteristics such that when the first and second polarization plates are placed one on the other in such a way as to have substantially parallel transmission axes, a value acquired by subtracting a transmittance of light with a wavelength of 640 nm from a transmittance of light with a wavelength of 460 nm is greater than -3%.

摘要翻译： 用于显示纯白色的液晶显示装置具有形成在其上的第一电极的第一基板; 第二基板，定位成面对所述第一基板并且具有形成在其上的第二电极; 密封在第一和第二基板之间的液晶; 以及第一和第二偏振板，被布置成夹住第一和第二基板并且具有这样的偏振特性，使得当第一和第二偏振板彼此以一定的方式放置成具有基本垂直的透射轴时，通过分割获得的值 通过波长为440nm的光的透射率，波长为500nm的光的透射率显着小于0.4。 第一和第二偏振板具有这样的光学特性，使得当第一和第二偏振片彼此放置成具有基本平行的透射轴时，通过减去波长为640的光的透射率获得的值 波长为460nm的光的透射率大于-3％。