公开(公告)号：US4893904A

公开(公告)日：1990-01-16

申请号：US220953

申请日：1988-06-21

申请人： Morio Ohta ,  Hideaki Inoue

发明人： Morio Ohta ,  Hideaki Inoue

IPC分类号： G02F1/133 ,  G02F1/1335 ,  G02F1/139

CPC分类号： G02F1/13725 ,  G02F1/13306

摘要： An arrangement of the liquid crystal light shutter wherein its liquid crystal matter is two-frequency-driven by signals (or waveforms) in which frequencies (f.sub.H and f.sub.L) higher and lower than a frequency (f.sub.C), which inverts the dielectric aniostropy of the liquid crystal matter, is contained. The liquid crystal matter of this liquid crystal light shutter includes a dichroic dye, and serves to pass or absorb the light entering into the liquid crystal light shutter. This causes the liquid crystal light shutter to be opened or closed, and the liquid crystal light shutter is provided with a polarizing plate for polarizing the light passing through, or entering into this liquid crystal light shutter. The present invention relates to a second polarizing plate employed by the liquid crystal light shutter, for polarizing the light exiting the shutter.

摘要翻译： 液晶光闸的布置，其中其液晶物质由频率（fH和fL）高于和低于频率（fC）的频率（fC）的信号（或波形）进行双频驱动，其将反相的频率 含有液晶物质。 该液晶光闸的液晶物质包括二色性染料，用于使进入液晶光闸的光通过或吸收。 这使得液晶光闸被打开或关闭，并且液晶光闸被设置有用于使通过的光偏振或者进入该液晶光闸。 本发明涉及一种由液晶光闸所采用的第二偏光板，用于使离开光闸的光偏振。

公开(公告)号：US4819186A

公开(公告)日：1989-04-04

申请号：US148424

申请日：1988-01-25

申请人： Morio Ohta ,  Hideaki Inoue

发明人： Morio Ohta ,  Hideaki Inoue

IPC分类号： G09G3/36 ,  G06F15/66

CPC分类号： G09G3/3622

摘要： A waveform generating apparatus for driving a liquid crystal device has a memory for storing waveform data for designating a drive waveform of the liquid crystal device and duration data for designating a duration for which the drive waveform designated by the waveform data is to be supplied, and for outputting the waveform data and the duration data in accordance with an input address designation signal. The apparatus also has a macro decoder for receiving the waveform data output from the memory and a clock signal having a predetermined period and a predetermined phase, and outputting a plurality of drive waveforms designated by the waveform data from corresponding output terminals, thereby generating predetermined waveforms.

摘要翻译： 用于驱动液晶装置的波形发生装置具有用于存储用于指定液晶装置的驱动波形的波形数据的存储器和用于指定要由其提供波形数据指定的驱动波形的持续时间的持续时间数据，以及 用于根据输入地址指定信号输出波形数据和持续时间数据。 该装置还具有用于接收从存储器输出的波形数据的宏解码器和具有预定周期和预定相位的时钟信号，并且从相应的输出端输出由波形数据指定的多个驱动波形，由此产生预定波形 。

公开(公告)号：US4755812A

公开(公告)日：1988-07-05

申请号：US769732

申请日：1985-08-27

申请人： Morio Ohta ,  Shizuo Tsuchiya ,  Hideaki Inoue

发明人： Morio Ohta ,  Shizuo Tsuchiya ,  Hideaki Inoue

IPC分类号： G02F1/133 ,  G06K15/12 ,  G09G3/36

CPC分类号： G09G3/3622 ,  G02F1/133 ,  G02F1/13306 ,  G06K15/1252 ,  G09G2320/041

摘要： A method of driving a liquid crystal recording device comprises applying a drive signal to liquid crystal micro shutters defined at the intersection of common electrodes that are normal to signal electrodes. The drive signal is a signal experienced by a microshutter as a result of the application of a selected signal to the common electrode and the application of a recording signal to the signal electrode. Both the selected and recording signals contain components of frequencies grater and less than a specified frequency which causes the dielectric anistotropy of the liquid crystal to disappear. A drive signal which opens or closes microshutters for a selected period of time includes a signal whose frequency is lower than said specified frequency, and superposed waveform obtained when the signal whose frequency is loser than the specified frequency is superposed upon a signal whose frequency is higher than the specified frequency. A driving waveform which reversely sets the microshutters open or closed for the selected period of time is formed of a signal including a frequency higher than the specified frequency and a zero frequency signal. As a consequence of the application of signals of this nature to the microshutters, the temperature characteristics of the liquid crystal microshutters are improved.

摘要翻译： 驱动液晶记录装置的方法包括将驱动信号施加到与信号电极垂直的公共电极的交点处限定的液晶微快门。 驱动信号是由于将所选择的信号施加到公共电极并且向信号电极施加记录信号而由微振荡器经受的信号。 所选择的和记录的信号都包含频率较高且小于指定频率的分量，这导致液晶的介电异向熵消失。 在选定的时间周期内打开或关闭微型显示器的驱动信号包括频率低于所述指定频率的信号，当频率比特定频率更低的信号被叠加在频率较高的信号时获得的叠加波形 比指定的频率。 在所选择的时间周期内反向设置微通道断开或闭合的驱动波形由包括高于指定频率的频率和零频率信号的信号形成。 作为将这种性质的信号应用于微型显示器的结果，提高了液晶微型显示器的温度特性。

公开(公告)号：US4720717A

公开(公告)日：1988-01-19

申请号：US45191

申请日：1987-04-30

申请人： Morio Ohta ,  Shizuo Tsuchiya

发明人： Morio Ohta ,  Shizuo Tsuchiya

IPC分类号： H04N1/23 ,  B41J2/445 ,  G02F1/133 ,  G03G15/04 ,  G06K15/12 ,  G02F1/13

CPC分类号： G06K15/1252 ,  Y10S347/90

摘要： A waveform forming device comprises a light source, a liquid crystal light shutter for passing or preventing the light of the light source and a driving circuit for driving a plurality of electrodes of the liquid crystal light shutter by using drive control signals including a signal of a high frequency f.sub.H and a signal of a low frequency f.sub.L. The frequencies f.sub.H and f.sub.L are respectively higher and lower than the frequency which makes a liquid crystal dielectric anisotropy zero. The waveform forming device has a ROM in which a plurality of basic control signals are stored, a counter for addressing a desired memory areas of the ROM and a waveform selector for selecting the basic control signals. The drive control signals are formed by combining the basic control signals, thereby to provide a desired drive pattern signal.

摘要翻译： 波形形成装置包括光源，用于通过或防止光源的光的液晶光闸和通过使用包括信号的驱动控制信号驱动液晶光闸的多个电极的驱动电路 高频fH和低频fL的信号。 频率fH和fL分别高于和低于使液晶介电各向异性为零的频率。 波形形成装置具有存储多个基本控制信号的ROM，用于寻址ROM的期望存储区域的计数器和用于选择基本控制信号的波形选择器。 通过组合基本控制信号来形成驱动控制信号，从而提供期望的驱动模式信号。

公开(公告)号：US4614954A

公开(公告)日：1986-09-30

申请号：US649851

申请日：1984-09-12

申请人： Morio Ohta ,  Shizuo Tsuchiya ,  Yoshito Nakano ,  Masaru Aikawa ,  Seiji Asaumi

发明人： Morio Ohta ,  Shizuo Tsuchiya ,  Yoshito Nakano ,  Masaru Aikawa ,  Seiji Asaumi

IPC分类号： G01D15/14 ,  G06K15/12 ,  H04N1/036 ,  H04N1/193 ,  H04N1/40 ,  G01D9/42 ,  G01D15/06 ,  G02F1/13

CPC分类号： G06K15/1252 ,  G01D15/14 ,  H04N1/036 ,  H04N1/193 ,  H04N1/40025

摘要： In a recording apparatus of this invention, liquid crystal light shutter operates by using the double frequency drive. The double frequency drive employs a higher frequency f.sub.H and lower frequency f.sub.L. The dielectric anisotropy becomes positive in the case of the lower frequency f.sub.L than crossover frequency f.sub.C and becomes negative in the case of the higher frequency f.sub.H than the frequency f.sub.C of liquid crystal material. The driver circuit of liquid crystal light shutter includes a delay circuit (146). Both a recording data delayed through the delay circuit (146) and a recording data formed without going through the delayed circuit (146) are produced in an LSI, to be supplied to write selecting electrodes and signal electrodes of the liquid crystal light shutter, thereby driving the liquid crystal light shutter in a time sharing manner.

摘要翻译： 在本发明的记录装置中，液晶光闸通过使用双频驱动器进行操作。 双频驱动采用高频fH和较低频率fL。 在频率fL低于交越频率fC的情况下，介电各向异性变为正，在频率fH高于液晶材料的频率fC的情况下变为负。 液晶光闸的驱动电路包括延迟电路（146）。 在LSI中产生延迟通过延迟电路（146）的记录数据和不经过延迟电路（146）形成的记录数据，以提供给液晶光闸的写选择电极和信号电极，从而 以分时方式驱动液晶光闸。

公开(公告)号：US4649404A

公开(公告)日：1987-03-10

申请号：US792256

申请日：1985-10-28

申请人： Morio Ohta ,  Shizuo Tsuchiya

发明人： Morio Ohta ,  Shizuo Tsuchiya

IPC分类号： B41J2/445 ,  G02F1/133 ,  G03G15/32 ,  G06K15/12 ,  H04N1/036 ,  H04N1/23 ,  H04N1/387 ,  G01D15/14

CPC分类号： G03G15/32 ,  G06K15/1242 ,  G06K15/1252 ,  H04N1/387 ,  Y10S347/90

摘要： A recording apparatus is capable recording information by light passed through the light shutter. When the information is recorded on to a sheet of paper, the recording apparatus controls that area on the paper where information is to be recorded, and it comprises plural AND or OR gates, counters and flip-flop circuits. The area on the paper where the information is to be recorded is indicated by an effective writing signal applied from a means located outside and recording data applied from a means located outside is recorded on to the sheet of paper responsive to this effective writing signal.

摘要翻译： 记录装置能够通过光快门的光记录信息。 当信息被记录在一张纸上时，记录装置控制要记录信息的纸上的区域，并且它包括多个“与”或“或”门，计数器和触发器电路。 纸张上要记录信息的区域由位于外部的装置施加的有效写入信号和从外部装置施加的记录数据响应于该有效写入信号被记录在纸张上。

公开(公告)号：US4641156A

公开(公告)日：1987-02-03

申请号：US650521

申请日：1984-09-14

申请人： Morio Ohta ,  Shizuo Tsuchiya ,  Yoshito Nakano ,  Masaru Aikawa ,  Seiji Asaumi

发明人： Morio Ohta ,  Shizuo Tsuchiya ,  Yoshito Nakano ,  Masaru Aikawa ,  Seiji Asaumi

IPC分类号： G01D15/14 ,  G06K15/12 ,  H04N1/036 ,  H04N1/193 ,  H04N1/40

CPC分类号： G01D15/14 ,  G06K15/1252 ,  H04N1/036 ,  H04N1/193 ,  H04N1/40025

摘要： In the recording apparatus of this invention, liquid crystal light shutter operates by using the double frequency drive. The double frequency drive utilizes signals of a high frequency f.sub.H and lower frequency f.sub.L. The dielectric anisotropy of liquid crystal matrial becomes positive in the case of the frequency f.sub.L lower than crossover frequency f.sub.C and becomes negative in the case of the frequency f.sub.H higher than the frequency f.sub.C. When the data signal including the signal of the frequency f.sub.L for a final period of a writing cycle Tw, is applied to write selection electrodes and data signal electrodes, liquid crystal light shutter is kept open for the final period of the writing cycle Tw, namely, opening or closing state of the shutter which is caused during a selection period can be eliminated.

摘要翻译： 在本发明的记录装置中，通过使用双频驱动来操作液晶光闸。 双频驱动采用高频fH和低频fL的信号。 在频率fL低于交越频率fC的情况下，液晶母线的介电各向异性变为正，在频率fH高于频率fC的情况下变为负。 当包含写入周期Tw的最后期间的频率f L的信号的数据信号被施加到写入选择电极和数据信号电极时，液晶光闸在写入周期Tw的最后期间保持打开，即 可以消除在选择期间引起的快门的打开或关闭状态。