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    • 2. 发明专利
    • Cumulative drive scheme and method for a liquid crystal display
    • AU7796898A
    • 1998-12-21
    • AU7796898
    • 1998-05-19
    • KENT DISPLAYS INC
    • HUANG XIAO-YANG
    • G02F1/133G09G3/20G09G3/36
    • A liquid crystal display including driver circuitry which applies a series of voltage pulses at a frequency of approximately 60 Hz. to cumulatively change a reflectance state of a pixel in an array of pixels at a near video updating rate. The display includes a near video rate updating portion, while the remainder of the display has a slower updating frequency or rate. The display is comprised of a bistable cholesteric liquid crystal material sandwiched between an electrode array having a plurality of row and column electrodes. In one operating embodiment, the driver circuitry generates a unipolar row and column waveforms, the row waveforms being applied to the row electrodes and the column waveforms being applied to the column electrodes of the near video rate updating portion. Approximately every 16 milliseconds, a pixel in the near video rate updating portion receives a control voltage pulse corresponding to the difference between the row and column waveforms. Application of six to seven control voltage pulses is sufficient to change the reflectance state of the pixel. In a second operating embodiment, the driver circuitry generates bipolar row and column waveforms. In alternate embodiments, dual column driver circuitry is provided and interlacing schemes are used to increase the number of rows in the near video rate updating portion of the display.
    • 4. 发明公开
    • DISPLAY DEVICE REFLECTING VISIBLE AND INFRARED RADIATION
    • 圣诞节圣诞节礼物圣诞老人
    • EP1012658A4
    • 2004-09-15
    • EP98907717
    • 1998-03-04
    • KENT DISPLAYS INC
    • KHAN ASAD AURBAN ELLISON C IIHUANG XIAO-YANG
    • G02B5/26G02F1/1347G02F1/137G02F1/13C09K19/00G02F1/1335G02F1/1368G03C5/00
    • G02F1/13473G02F1/13718
    • A liquid crystal display device includes cell wall structure (12, 14, 16, 18) and a chiral nematic liquid crystal material (22, 26). The cell wall structure (12, 14, 16, 18) and the liquid crystal (22, 26) cooperate to form focal conic and twisted planar textures that are stable in the absence of a field. A device (45) applies an electric field to the liquid crystal (22, 26) for transforming at least a portion of the material to at leat one of the focal conic and twisted planar textures. The liquid crystal material (22, 26) has a pitch length effective to reflect radiation having a wavelength in both the visible and the infrared ranges of the electromagnetic spectrum at intensity that is sufficient for viewing by an observer. One liquid crystal material may be disposed in a single region or two liquid crystal materials (22, 26) may be used, each in separate regions (20, 24). One aspect of the invention is directed to a photolithography method for patterning a substrate (48) of the display. The display may also have multicolor capabilities by including at least two materials that reflect visible light.
    • 液晶显示装置包括单元壁结构和手征向列型液晶材料。 细胞壁结构和液晶协同形成在没有场的情况下是稳定的焦锥和扭曲的平面纹理。 一种器件对液晶施加电场,用于将至少一部分材料转换成焦点锥形和扭转的平面纹理中的至少一个。 液晶材料具有有效地在强度足以观察观察者的情况下反射具有在电磁光谱的可见光和红外范围内的波长的辐射的音高长度。 一个液晶材料可以设置在单个区域中,或者可以使用两个或更多个液晶材料,每个液晶材料在不同的区域中,即使没有红外反射层。 本发明的一个方面涉及用于对显示器的基板进行图案化的光刻方法。 通过包括反射可见光的至少两个或三个液晶材料的分开的层,显示器也可以具有多色功能。 可以产生具有灰度功能的全色堆叠显示器。
    • 6. 发明申请
    • CUMULATIVE DRIVE SCHEME AND METHOD FOR A LIQUID CRYSTAL DISPLAY
    • 用于液晶显示的累积驱动方案和方法
    • WO9855987A3
    • 1999-04-01
    • PCT/US9810207
    • 1998-05-19
    • KENT DISPLAYS INC
    • HUANG XIAO-YANG
    • G02F1/133G09G3/20G09G3/36
    • G09G3/3629G09G3/3681G09G3/3692G09G2300/0486G09G2310/0227G09G2310/04
    • A liquid crystal display (10a) including driver circuitry which applies a series of voltage pulses at a frequency of approximately 60 Hz to cumulatively change a reflectance state of a pixel in the array (25) of pixels at a near video updating rate. The display includes a near video rate updating portion (10a), while the remainder of the display has a slower updating frequency or rate. The display is comprised of a bistable cholesteric liquid crystal material (50) sandwiched between an electrode array having a plurality of row (550 a-d) and column electrodes (601 a-f). In one operating embodiment, the driver circuitry (600) generates a unipolar row and column waveforms (700), the row waveforms being applied to the row electrodes and the column waveforms being applied to the column electrodes of the near video rate updating portion.
    • 一种包括驱动电路的液晶显示器(10a),其以大约60Hz的频率施加一系列电压脉冲以在近视频更新率下累积地改变像素阵列(25)中的像素的反射率状态。 显示器包括近视频率更新部分(10a),而显示器的其余部分具有较慢的更新频率或速率。 显示器由夹在具有多行(550a-d)和列电极(601a-f)的电极阵列之间的双稳态胆甾型液晶材料(50)组成。 在一个操作实施例中,驱动器电路(600)产生单极行和列波形(700),行波形被施加到行电极,列波形被施加到近视频速率更新部分的列电极。