公开(公告)号：US5111320A

公开(公告)日：1992-05-05

申请号：US619411

申请日：1990-11-29

申请人： Joseph J. Wysocki ,  Sui K. Hark ,  Virgil J. Hull ,  Joseph F. Stephany ,  Andras I. Lakatos ,  Ram S. Narang

发明人： Joseph J. Wysocki ,  Sui K. Hark ,  Virgil J. Hull ,  Joseph F. Stephany ,  Andras I. Lakatos ,  Ram S. Narang

IPC分类号： G02F1/1343 ,  G02F1/141

CPC分类号： G02F1/134309 ,  G02F1/141 ,  G02F2201/122

摘要： A light shutter is provided wherein a first plate which includes a pixel electrode for use in applying a includes a background electrode located adjacent the pixel voltage potential across a ferroelectric material also electrode and substantially surrounding the pixel electrode, whereby an electronic mask can be created adjacent the pixel electrode in the ferroelectric material. A second plate which, along with the first plate sandwiches the ferroelectric material, includes a backplane electrode which is used in conjunction with the pixel and background electrodes on the first plate for applying voltage potentials across the ferroelectric material. By maintaining a minimal amount of spacing between the background electrode and the pixel electrode, a voltage potential can be applied between the background and backplane electrodes so that the ferroelectric material located adjacent the pixel electrode can be maintained in, for example, a non-light transmissive state whereby the contrast between the pixel and inter-pixel regions is greatly improved. Image bars or displays can be formed by arranging a plurality of light shutters (and consequently, pixel electrodes) on the first plate with one or more background electrodes surrounding the plurality of pixel electrodes. Additionally, the background electrode and/or other electrodes can be used for applying electric fields to the ferroelectric material which are non-parallel to the polarization direction of the molecules of the ferroelectic material to reduce the time required to change the ferroelectric material between light transmissive and light blocking states.

摘要翻译： 提供了一种光闸，其中包括用于施加的像素电极的第一板包括邻近铁电材料电极并且基本上围绕像素电极的像素电压电位附近的背景电极，由此可以相邻地形成电子掩模 铁电材料中的像素电极。 与第一板夹着铁电材料一起的第二板包括背板电极，其与第一板上的像素和背景电极结合使用，以跨越铁电体材料施加电压电位。 通过在背景电极和像素电极之间保持最小量的间隔，可以在背景电极和背板电极之间施加电压电位，使得位于像素电极附近的铁电材料可以保持在例如非光 透射状态，从而大大提高像素和像素间区域之间的对比度。 可以通过在多个像素电极周围设置一个或多个背景电极而在第一板上布置多个光快门（以及因此的像素电极）来形成图像条或显示器。 此外，背景电极和/或其他电极可以用于向铁电材料施加电场，铁电材料不与铁电材料的分子的偏振方向平行，以减少在透光性之间改变铁电材料所需的时间 和阻光状态。

公开(公告)号：US5177475A

公开(公告)日：1993-01-05

申请号：US630205

申请日：1990-12-19

申请人： Joseph F. Stephany ,  Joseph J. Wysocki ,  Sui K. Hark ,  Virgil J. Hull

发明人： Joseph F. Stephany ,  Joseph J. Wysocki ,  Sui K. Hark ,  Virgil J. Hull

IPC分类号： G02F1/1333 ,  G02F1/1337 ,  G06K15/12 ,  G09G3/36

CPC分类号： G06K15/1252 ,  G02F1/133711 ,  G09G3/3629 ,  G09G3/3685 ,  G02F1/133345 ,  G09G2310/06 ,  G09G2310/061

摘要： Liquid crystal devices are provided with a DC current blocking layer which improves the lifetime of the liquid crystal device and also permits the use of two-level drivers, thus reducing the complexity of the driving scheme necessary to address the liquid crystal devices. Preferably, the blocking layer is the alignment layer which is made from poly-para-xylylene having a thickness sufficient to act as a DC blocking layer. Additionally, specific driving schemes for driving liquid crystal devices are provided. When the liquid crystal device includes a material which relaxes when no voltage is applied thereto (e.g., a nematic material), the information signal is entirely removed from alternating time frames during which the liquid crystal device is addressed. When the liquid crystal device includes a ferroelectric material, an arbitrarily large voltage potential is applied to the electrodes located on one side of the ferroelectric material for a first portion of a dwell time so that the pixels of the liquid crystal device are easily cleared of any previous information.

摘要翻译： 液晶装置设置有DC电流阻挡层，其提高了液晶装置的寿命，并且还允许使用两级驱动器，从而降低了解决液晶装置所需的驱动方案的复杂性。 优选地，阻挡层是由具有足以充当DC阻挡层的厚度的聚对二甲苯制成的取向层。 另外，提供了用于驱动液晶装置的具体驱动方案。 当液晶装置包括当没有电压施加到其上时放松的材料（例如向列型材料）时，信息信号完全从液晶装置寻址的交替时间帧中移除。 当液晶装置包括铁电体材料时，对于驻留时间的第一部分，位于铁电材料一侧的电极施加任意大的电压电位，使得液晶装置的像素容易清除任何 以前的信息。

公开(公告)号：US4783146A

公开(公告)日：1988-11-08

申请号：US4932

申请日：1987-01-20

申请人： Joseph F. Stephany ,  Andras I. Lakatos ,  Virgil J. Hull ,  Alain E. Perregaux

发明人： Joseph F. Stephany ,  Andras I. Lakatos ,  Virgil J. Hull ,  Alain E. Perregaux

IPC分类号： G09G3/36 ,  G02F1/13 ,  G06K15/12 ,  H04N1/113

CPC分类号： G06K15/1252

摘要： A linear array of liquid crystal shutters mounted near a photoreceptor surface and arranged transversely to the direction of travel of the photoreceptor surface, an array of thin film transistors connected to the array of liquid crystal shutters for electrically driving the shutters and logic means connected to the array of thin film transistors selectively pulsing the liquid crystal shutters to selectively expose the photoreceptor surface a line at a time. The system further includes circuit means for producing an electric field between the opposed electrodes of each of the liquid crystal shutters to prevent passage of light through the shutters and means for selectively de-energizing each of the pairs of electrodes for predetermined time period in response to the receipt of input data signals.

公开(公告)号：US4830468A

公开(公告)日：1989-05-16

申请号：US213751

申请日：1988-06-30

申请人： Joseph F. Stephany ,  Andras I. Lakatos ,  Virgil J. Hull ,  Alain E. Perregaux

发明人： Joseph F. Stephany ,  Andras I. Lakatos ,  Virgil J. Hull ,  Alain E. Perregaux

IPC分类号： G06K15/12

CPC分类号： G06K15/1252

摘要： A linear array of liquid crystal shutters mounted near a photoreceptor surface and arranged transversely to the direction of travel of the photoreceptor surface, an array of multiplexed thin film transistors (TFT's) connected to the array of liquid crystal shutters for electrically driving the shutters and logic means connected to the multiplexed array of thin film resistors selectively pulsing the liquid crystal shutters to selectively expose the photoreceptor surface a line at a time. The system further includes a single backplane and circuit means for producing an electric field between the backplane and electrodes of each of the liquid crystal shutters to prevent passage of light through the shutters and means for selectively de-energizing each of the pairs of electrodes for predetermined time period in response to the receipt of input data signals.

摘要翻译： 安装在感光体表面附近并且横向于感光体表面行进方向布置的液晶快门的线性阵列，连接到液晶快门阵列的多路复用薄膜晶体管阵列（TFT），用于电驱动快门和逻辑 连接到多路复用的薄膜电阻阵列的装置，选择性地使液晶快门脉动，从而每次选择性地将感光体表面曝光。 该系统还包括单个背板和电路装置，用于在每个液晶快门的背板和电极之间产生电场，以防止光通过快门，并且用于选择性地使每对电极断电以预定 响应于接收到输入数据信号的时间段。

公开(公告)号：US4728972A

公开(公告)日：1988-03-01

申请号：US62376

申请日：1987-06-15

申请人： Joseph F. Stephany ,  Virgil J. Hull ,  Eugene C. Faucz ,  Alain E. Perregaux

发明人： Joseph F. Stephany ,  Virgil J. Hull ,  Eugene C. Faucz ,  Alain E. Perregaux

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

CPC分类号： G06K15/1252 ,  H04N1/193

摘要： The invention is a liquid crystal material between horizontal and vertical electrodes. A xerographic drum is placed underneath the electrodes/liquid crystal configuration and an optical system provides light or no light at the intersection of the electrodes to be focused on the xerographic drum. A single line of data is created by printing first the odd elements of the data and then the even elements. First, data is clocked into a shift register coincident with clock pulses. This is the data for the next line to be printed or displayed and not the presently printed or displayed line of odd bits. When the new line has been completely shifted in, a latch pulse transfers the data to latches, a one line parallel in parallel out buffer. Then, on the even half of the cycle, the even bits of data which have been shifted in while the odd dots are being printed, are latched to the drivers.

摘要翻译： 本发明是水平和垂直电极之间的液晶材料。 静电复印鼓放置在电极/液晶结构下方，光学系统在要聚焦在静电复印鼓上的电极交叉处提供光或不发光。 通过首先打印数据的奇数元素，然后打印偶数元素来创建单行数据。 首先，数据被时钟输入到与时钟脉冲一致的移位寄存器中。 这是要打印或显示的下一行的数据，而不是当前打印或显示的奇数位行。 当新线路已经完全移入时，锁存脉冲将数据传输到锁存器，一条并行并行的缓冲器线路。 然后，在偶数半周期中，正在打印奇数点时移入的数据的偶数位被锁存到驱动器。

公开(公告)号：US5220442A

公开(公告)日：1993-06-15

申请号：US755967

申请日：1991-09-06

申请人： Richard B. Dingwall ,  Lowell W. Knapp ,  John H. Steele ,  James S. Celebi ,  Virgil J. Hull

发明人： Richard B. Dingwall ,  Lowell W. Knapp ,  John H. Steele ,  James S. Celebi ,  Virgil J. Hull

IPC分类号： G02F1/1335 ,  G02F1/1347

CPC分类号： G02F1/1347 ,  G02F1/133512

摘要： A liquid crystal display unit is provided which includes a primary, image-defining display and a secondary display, arranged in series with the primary display. The primary and secondary displays have equal numbers of light shutters, similarly sized and located on each display, so that when the primary and secondary displays are placed in series their respective light shutters are also in series. When corresponding light shutters on the primary and secondary displays are closed, substantially no light passes through the displays to the opposite side of the primary display. An opaque mask is formed on the input side of the primary display to define the shape of the image elements to be displayed. This mask covers the edges of the primary display light shutters to define the image elements such that each light shutter on the secondary display is larger in size than its corresponding image element on the primary display. This permits the primary and secondary displays to be easily aligned with each other. Color patches can be located on the light input side of the primary display light shutters so that the viewed images are in color. The use of the opaque mask to form the image elements eliminates the need to form precisely shaped color patches. Since no light leaks through the light shutter pairs when switched off, and the mask blocks all light between light shutters, a display is provided having a true dead front. The true dead front display permits colored text displays using mimic-type electrodes to be produced. Since the secondary displays need not perform as well as the primary displays, displays which are not suitable for use as primary displays can be used as the secondary displays.

摘要翻译： 提供了一种液晶显示单元，其包括与主显示器串联布置的主要，图像定义显示器和次显示器。 主显示器和次显示器具有相同数量的光闸，类似尺寸并位于每个显示器上，使得当主显示器和次显示器串联放置时，其各自的光闸也是串联的。 当主显示器和次显示器上的对应的光闸关闭时，基本上没有光通过显示器到主显示器的相对侧。 在主显示器的输入侧形成不透明掩模，以限定要显示的图像元素的形状。 该掩模覆盖主显示器光闸的边缘以限定图像元件，使得辅助显示器上的每个光闸的尺寸大于其在主显示器上的相应图像元件。 这允许主显示器和辅助显示器彼此容易地对准。 色块可以位于主显示器光闸的光输入侧，使得所观看的图像是彩色的。 使用不透明蒙版来形成图像元素，消除了形成精确成形的色块的需要。 由于在关闭时没有光通过光快门对泄漏，并且掩模阻挡光闸之间的所有光，所以提供具有真正死角的显示器。 真正的死前显示器允许使用模拟型电极生产彩色文本显示器。 由于辅助显示器不需要与主显示器一样执行，因此不适合用作主显示器的显示器可用作辅助显示器。

公开(公告)号：US5307188A

公开(公告)日：1994-04-26

申请号：US12491

申请日：1993-02-02

申请人： Richard B. Dingwall ,  Lowell W. Knapp ,  John H. Steele ,  James S. Celebi ,  Virgil J. Hull

发明人： Richard B. Dingwall ,  Lowell W. Knapp ,  John H. Steele ,  James S. Celebi ,  Virgil J. Hull

IPC分类号： G02F1/1335 ,  G02F1/1347 ,  G02F1/133 ,  G02F1/137

CPC分类号： G02F1/1347 ,  G02F1/133512

摘要： A liquid crystal display unit is provided which includes a primary, image-defining display and a secondary display, arranged in series with the primary display. The primary and secondary displays have equal numbers of light shutters, similarly sized and located on each display, so that when the corresponding light shutters on the primary and secondary displays are closed, substantially no light passes through the viewing side of the primary display. An opaque mask is formed on the input side of the primary display to define the shape of the image elements to be displayed. This mask covers the edges of the primary display light shutters to define the image elements display. This mask permits the primary and secondary displays to be easily aligned with each other. Color patches can be located on the light input side of the primary display light shutters so that the viewed images are in color. The use of the opaque mask to form the image elements eliminates the need to form precisely shaped color patches. Since and the mask blocks all light between light shutters, a display is provided having a true dead front. The true dead front display permits colored text displays using mimic-type electrodes to be produced. Since the secondary displays need not perform as well as the primary displays, displays which are not suitable for use as primary displays can be used as the secondary displays.

摘要翻译： 提供了一种液晶显示单元，其包括与主显示器串联布置的主要，图像定义显示器和次显示器。 主显示器和次显示器具有相同数量的光闸，类似尺寸并位于每个显示器上，使得当主显示器和次显示器上的对应的光闸关闭时，基本上没有光穿过主显示器的观察侧。 在主显示器的输入侧形成不透明掩模，以限定要显示的图像元素的形状。 该面罩覆盖主显示器光闸的边缘以定义图像元素显示。 该掩模允许主显示器和次显示器彼此容易对准。 色块可以位于主显示器光闸的光输入侧，使得所观看的图像是彩色的。 使用不透明蒙版来形成图像元素，消除了形成精确成形的色块的需要。 由于遮罩遮挡了光闸之间的所有光，所以提供了具有真实死角的显示器。 真正的死前显示器允许使用模拟型电极生产彩色文本显示器。 由于辅助显示器不需要与主显示器一样执行，因此不适合用作主显示器的显示器可用作辅助显示器。