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公开(公告)号：EP0191596A3
公开(公告)日：1987-11-11
申请号：EP86300777
申请日：1986-02-05
发明人： Bohmer, William
CPC分类号： H01J31/124 , H01J29/74 , H01J29/76
摘要： The disclosure relates to an apparatus and method for forming a scanning electron beam for use in a flat screen cathode raytube device. An analog addressing method enables scanning of one axis of the screen of the CRT device. During scanning, all portions of a sheet of electrons emitted by a line cathode 18 are deflected at any given time and blocked by an analog horizontal-positioning deflection grid 20 except for one narrow portion disposed along the length of the line cathode. At the one portion, a narrow beam of electrons is formed. The grid contains an address plate 22 and a load plate 23. The load plate creates a voltage gradient causing each location along its horizontal axis to be at a distinct voltage. Horizontal scanning is accomplished by applying a varying central voltage to the address plate. This varying voltage will be matched by an equal voltage at a single predetermined location along the horizontal axis of the load plate adjacent to which electrons can pass undeflected in the form of a beam. At all other locations along the horizontal axis, unequal voltages on the plates deflect electrons in the sheet passing between them and cause the electrons to be blocked. Vertical scanning is accomplished by varying the voltage difference between two parallel vertical deflection plates (11, 12) between which the scanned electron beam passes. The disclosure also relates to the use of electromagnetic rather than electrostatic deflections in producing a scanning electron beam from a line cathode. In addition, the disclosure relates to multiple beams for scanning and producing of color images.
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2.发明公开Field scanning optical displays, generation of fields therefor and scanning thereof 失效场强相关的光学显示器，产生电场和扫描所述广告。
公开(公告)号：EP0044637A1
公开(公告)日：1982-01-27
申请号：EP81302985.7
申请日：1981-07-01
IPC分类号： G02F1/133
CPC分类号： G02F1/133 , G02F1/134309 , G02F1/134336 , G02F1/1345 , G02F1/1347
摘要： Disclosed are field sensitive optical displays, and arrangements and methods for inducing fields in the displays and for scanning the displays. In the disclosed embodiments, liquid crystal, optoceramic and electrolumins- cent materials are utilized. Methods and arrangements for improving the response time of twisted nematic liquid crystal material and for generating color displays are also disclosed. Methods and arrangements are also disclosed for superimposing varying and a dc fields in field sensitive material. Various display patterns such as a movable dot, intersecting lines and a pivoting line can be obtained.
摘要翻译： 本发明公开了场敏感的光学显示器，以及安排和用于诱导显示器领域和用于扫描显示器的方法。 在盘游离缺失实施例中，液体晶体，陶瓷和光电electroluminscent材料被使用。 方法和装置用于改善扭曲向列型液晶材料的响应时间和用于产生彩色显示器因此游离缺失盘。 因此方法和布置是游离缺失盘在磁场敏感材料叠加变化和直流字段。 各种显示模式：例如，可移动的点，交叉线和枢转线可以得到。
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公开(公告)号：EP0205235A3
公开(公告)日：1988-09-21
申请号：EP86302570
申请日：1986-04-07
发明人： Bohmer, William
CPC分类号： G01D7/00
摘要： The disclosure relates to liquid crystal display devices for presenting analog displays of electrical input signals which are a function of a variable to be displayed. Liquid crystal material is disposed in the gap between an address electrode 40 plate and a load electrode plate. An array of load electrodes 60 on the load plate are connected to an impedance element 50 which can create a voltage gradient (52, 54) across the array of the load electrodes. The address electrode which is a conductive layer disposed on the address plate is connected to one terminal of the impedance element. The input signal can be an analog voltage proportional to some condition being measured. The input signal is connected to both the impedance element and to the address electrode. The optical properties of the liquid crystal material change at a point where the potential difference between the address electrode and the load electrode places a predetermined or threshold electric field across the liquid crystal. As the input voltage 42 commonly applied to the address electrode and the load electrode is changed, the voltage and gradient along the array of load electrodes changes and the areas of the display which are dark or bright will change in size. The liquid crystal display device is adapted to display analog bar graph presentations without the need for drivers, multiplexers, decoders, or analog-to-digital converters connected to the load electrodes to produce analog indicator displays of various configurations.
摘要翻译： 本公开涉及用于呈现作为要显示的变量的函数的电输入信号的模拟显示的液晶显示装置。 液晶材料设置在寻址电极40板和负载电极板之间的间隙中。 负载板上的负载电极阵列60连接到阻抗元件50上，该阻抗元件可跨越负载电极阵列产生电压梯度（52,54）。 位于地址板上的作为导电层的寻址电极连接到阻抗元件的一个端子。 输入信号可以是与被测量的一些条件成比例的模拟电压。 输入信号连接到阻抗元件和寻址电极。 液晶材料的光学特性在地址电极和负载电极之间的电位差跨越液晶放置预定或阈值电场的点变化。 当通常施加到地址电极和负载电极的输入电压42改变时，沿着负载电极阵列的电压和梯度变化，并且显示器的暗或亮的区域将在尺寸上改变。 液晶显示装置适于显示模拟条形图显示，而不需要连接到负载电极的驱动器，多路复用器，解码器或模数转换器，以产生各种配置的模拟指示器显示。
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4.发明公开
公开(公告)号：EP0177331A3
公开(公告)日：1986-10-29
申请号：EP85307010
申请日：1985-10-01
发明人： Bohmer, William
IPC分类号： G09G03/36 , G02F01/133 , G01R13/40
CPC分类号： G02F1/1345 , G01R13/408 , H05K3/325 , H05K3/368 , Y10S359/90
摘要： A liquid crystal display is provided for use in an oscilloscope. Analog multiplexing techniques enable displaying of waveforms of input signals with frequencies as high as 1 MHz. an xy grid is formed by two interleaved arrays of alternate parallel transparent electrodes (20 and 40). Use of liquid crystal material (44) results in very low power consumption and voltage threshold, improved lifetime, a wide viewing angle, and no image washout at high ambient light levels. Addition of a digital voltmeter, frequency counter, auto sync circuitry, dual trace, and movable cursor expands the capabilities of the display. A gray scale surrounds the actual null points on the display, allowing suitable resolution with a minimum of channels.
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5.发明授权Field scanning optical displays, generation of fields therefor and scanning thereof 失效现场扫描光学显示器及其扫描及其扫描的产生
公开(公告)号：EP0044637B1
公开(公告)日：1987-10-14
申请号：EP81302985.7
申请日：1981-07-01
IPC分类号： G02F1/133
CPC分类号： G02F1/133 , G02F1/134309 , G02F1/134336 , G02F1/1345 , G02F1/1347
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