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1. 发明授权

US5923320A Liquid-crystal display having the capability of a tablet 失效
标题翻译：具有片剂能力的液晶显示器
公开(公告)号：US5923320A
公开(公告)日：1999-07-13
申请号：US511613
申请日：1995-08-04
申请人： Hiroshi Murakami , Masafumi Itokazu , Ken-ichi Nakabayashi , Kazuhiro Takahara , Michiya Oura , Masami Oda
发明人： Hiroshi Murakami , Masafumi Itokazu , Ken-ichi Nakabayashi , Kazuhiro Takahara , Michiya Oura , Masami Oda
IPC分类号： G02F1/133 , G06F3/033 , G06F3/041 , G06F3/044 , G09G3/36 , G09G5/00
CPC分类号： G06F3/044
摘要： Disclosed is a liquid-crystal display having the capability of a tablet which offers high image quality and a high response speed. An active matrix type liquid-crystal display having the capability of a tablet comprises: an active matrix type liquid-crystal display composed of a device substrate having a plurality of scan electrodes, a plurality of data electrodes, a plurality of pixel electrodes, and a plurality of switching devices, and an opposed substrate holding a liquid crystal in cooperation with the device substrate; a voltage detector that when brought into contact with a display surface of the liquid-crystal display, detects pulses, which are applied consecutively to the scan electrodes and data electrodes, through electrostatic coupling between the detector and the scan electrodes or between the detector and the data electrodes and that outputs a detected signal; and a position detector for detecting a contact position of the detector on the basis of the detected signal. Herein, the device substrate is situated on the side of the observer of the display. The positions of data electrodes lying in the vicinity of a stylus are detected during a data electrode position detection period defined as a period during which no pulses are applied to scan electrodes. Positions of scan electrodes lying in the vicinity of the stylus are identified by detecting display scanning pulses that are applied consecutively to a plurality of scan electrodes in order to cause the switching devices to conduct consecutively during a display data writing period.
摘要翻译：公开了一种具有提供高图像质量和高响应速度的平板电脑的能力的液晶显示器。具有片剂能力的有源矩阵型液晶显示器包括：有源矩阵型液晶显示器，由具有多个扫描电极的器件基板，多个数据电极，多个像素电极和多个开关器件，以及与器件基板协作保持液晶的相对基板; 电压检测器，当与液晶显示器的显示表面接触时，通过检测器和扫描电极之间或检测器与扫描电极之间的静电耦合来检测连续施加到扫描电极和数据电极的脉冲数据电极，并输出检测信号; 以及位置检测器，用于基于检测到的信号检测检测器的接触位置。这里，器件基板位于显示器的观察者侧。位于触针附近的数据电极的位置在数据电极位置检测期间被检测，该数据电极位置检测周期被定义为扫描电极没有施加脉冲的周期。通过检测连续施加到多个扫描电极的显示扫描脉冲来识别位于触针附近的扫描电极的位置，以便在显示数据写入周期期间使开关器件连续导通。

2. 发明授权

US06222516B1 Active matrix liquid crystal display and method of driving the same 失效
标题翻译：有源矩阵液晶显示及其驱动方法
公开(公告)号：US06222516B1
公开(公告)日：2001-04-24
申请号：US08833468
申请日：1997-04-07
申请人： Masami Oda , Munehiro Haraguchi , Tadahisa Yamaguchi , Kazuhiro Takahara , Akira Yamamoto
发明人： Masami Oda , Munehiro Haraguchi , Tadahisa Yamaguchi , Kazuhiro Takahara , Akira Yamamoto
IPC分类号： G09C336
CPC分类号： G09G3/3648 , G09G3/3655 , G09G2300/043 , G09G2320/0209 , G09G2320/0223
摘要： A liquid crystal display has a liquid crystal layer, first and second electrodes, and a third electrode. The liquid crystal layer is inserted between the first and second electrodes to define liquid crystal cells. The third electrode is capacitively coupled with one of the first and second electrodes. A correction voltage for correcting distortion of a waveform for driving one of the first and second electrodes is applied to the third electrode, to keep an effective voltage applied to the liquid crystal cells unchanged and improve the display quality of the liquid crystal display. Therefore, the liquid crystal display of the present invention can correct distortion of a common voltage and prevent crosstalk.
摘要翻译：液晶显示器具有液晶层，第一和第二电极以及第三电极。液晶层插入在第一和第二电极之间以限定液晶单元。第三电极与第一和第二电极中的一个电容耦合。用于校正用于驱动第一和第二电极之一的波形的失真的校正电压被施加到第三电极，以保持施加到液晶单元的有效电压不变并且提高液晶显示器的显示质量。因此，本发明的液晶显示器可以校正公共电压的失真并防止串扰。

3. 发明授权

US06222515B1 Apparatus for controlling data voltage of liquid crystal display unit to achieve multiple gray-scale 失效
标题翻译：用于控制液晶显示单元数据电压达到多灰度的装置
公开(公告)号：US06222515B1
公开(公告)日：2001-04-24
申请号：US07786251
申请日：1991-10-31
申请人： Tadahisa Yamaguchi , Kazuhiro Takahara , Masami Oda , Hisashi Yamaguchi
发明人： Tadahisa Yamaguchi , Kazuhiro Takahara , Masami Oda , Hisashi Yamaguchi
IPC分类号： G09G336
CPC分类号： G09G3/2011 , G09G3/2018 , G09G3/3614 , G09G3/3648 , G09G3/3688 , G09G2310/027 , G09G2320/0247
摘要： In a driving device of an active matrix type liquid crystal display unit including a liquid crystal display panel, a scan driver, and a data driver, a data voltage controlling apparatus is provided to achieve digital multiple gray-scale levels with little flickering. The data voltage controlling apparatus supplies the data driver with a combination of two different data voltages picked up from a plurality of digital data voltages previously set. The combination of two different data voltages are, for example, a combination of different waveforms, a combination of negative level and positive level, and a combination of two different voltages having at least a voltage difference. Further, a division of T-V characteristics and an exchange of data voltages are carried out to reduce the flickering.
摘要翻译：在包括液晶显示面板，扫描驱动器和数据驱动器的有源矩阵型液晶显示单元的驱动装置中，提供数据电压控制装置，以实现少量闪烁的数字多灰度级。数据电压控制装置向数据驱动器提供从预先设定的多个数字数据电压中拾取的两个不同数据电压的组合。两个不同数据电压的组合例如是不同波形的组合，负电平和正电平的组合以及具有至少一个电压差的两个不同电压的组合。此外，执行T-V特性的划分和数据电压的交换以减少闪烁。

4. 发明授权

US5841410A Active matrix liquid crystal display and method of driving the same 失效
标题翻译：有源矩阵液晶显示及其驱动方法
公开(公告)号：US5841410A
公开(公告)日：1998-11-24
申请号：US783788
申请日：1997-01-15
申请人： Masami Oda , Munehiro Haraguchi , Tadahisa Yamaguchi , Kazuhiro Takahara , Takayuki Hoshiya , Akira Yamamoto
发明人： Masami Oda , Munehiro Haraguchi , Tadahisa Yamaguchi , Kazuhiro Takahara , Takayuki Hoshiya , Akira Yamamoto
IPC分类号： G02F1/133 , G02F1/136 , G02F1/1368 , G09F9/35 , G09G3/36 , G09G3/20
CPC分类号： G09G3/3648 , G09G3/3655 , G09G2300/043 , G09G2320/0209 , G09G2320/0223
摘要： A liquid crystal display has a liquid crystal layer, first and second electrodes, and a third electrode. The liquid crystal layer is inserted between the first and second electrodes to define liquid crystal cells. The third electrode is capacitively coupled with one of the first and second electrodes. A correction voltage for correcting distortion of a waveform for driving one of the first and second electrodes is applied to the third electrode, to keep an effective voltage applied to the liquid crystal cells unchanged and improve the display quality of the liquid crystal display. Therefore, the liquid crystal display of the present invention can correct distortion of a common voltage and prevent crosstalk.
摘要翻译：液晶显示器具有液晶层，第一和第二电极以及第三电极。液晶层插入在第一和第二电极之间以限定液晶单元。第三电极与第一和第二电极中的一个电容耦合。用于校正用于驱动第一和第二电极之一的波形的失真的校正电压被施加到第三电极，以保持施加到液晶单元的有效电压不变并且提高液晶显示器的显示质量。因此，本发明的液晶显示器可以校正公共电压的失真并防止串扰。

5. 发明授权

US5196738A Data driver circuit of liquid crystal display for achieving digital gray-scale 失效
标题翻译：用于实现数字灰度级的液晶显示器的数据驱动电路
公开(公告)号：US5196738A
公开(公告)日：1993-03-23
申请号：US766132
申请日：1991-09-27
申请人： Kazuhiro Takahara , Tadahisa Yamaguchi , Masami Oda , Hisashi Yamaguchi , Tetsuo Aoki , Fumitaka Asami
发明人： Kazuhiro Takahara , Tadahisa Yamaguchi , Masami Oda , Hisashi Yamaguchi , Tetsuo Aoki , Fumitaka Asami
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36
CPC分类号： G09G3/2011 , G09G3/3648 , G09G3/3688 , G09G2310/027
摘要： A data driver circuit of TFT-LCD having a plurality of power source voltage terminals with different voltage levels, an output terminal for providing a voltage to the TFT-LCD, a plurality of analog switches with load resistances provided between one of the source voltage terminals and the output terminal and having a switching terminal, and a voltage selection circuit for transmitting an ON signal to a selected one or more of the respective switching terminals of the analog switches. When an individual analog switch is turned ON, the corresponding source voltage value is supplied to the output terminal of the driver circuit and when two or more analog switches are selectively turned on, a combination of the voltage levels of the respective source voltage is associated with those switches which are turned ON is produced as the driver circuit output voltage, thereby affording a greater number of gray levels as the driver circuit output voltage levels than the number of power source voltage levels.

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