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1. 发明授权

US5614922A Display apparatus 失效
标题翻译：显示装置
公开(公告)号：US5614922A
公开(公告)日：1997-03-25
申请号：US414717
申请日：1995-03-31
申请人： Takafumi Kawaguchi , Akira Tomiyoshi , Makoto Takeda
发明人： Takafumi Kawaguchi , Akira Tomiyoshi , Makoto Takeda
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36
CPC分类号： G09G3/2011 , G09G3/3648 , G09G3/3688 , G09G2310/027 , G09G2330/021 , G09G3/2018
摘要： The active matrix type display apparatus of this invention includes a display medium made of an electro-optical material; a pair of substrates opposing each other with the display medium interposed therebetween; a plurality of pixel electrodes formed in a matrix on one of the substrates; a plurality of row electrodes; a plurality of column electrodes; switching devices each of which is disposed so as to correspond to each of the pixel electrodes, connects the corresponding pixel electrode to the column electrode corresponding to the pixel electrode, and is connected to the row electrode corresponding to the pixel electrode through a control terminal thereof; a row electrode driving circuit for applying a voltage to each of the row electrodes so that the corresponding switching device become conductive only in a row electrode scanning term during a horizontal scanning term assigned to each of the row electrodes; a column electrode driving circuit for alternately applying two kinds of voltages to each of the column electrodes repeatedly at a duty ratio in accordance with a display data corresponding to each of the column electrodes; and voltage switching inhibition element for inhibiting switching of the voltages to be applied to each of the column electrodes by the column electrode driving circuit at least in part of a horizontal scanning term that is not assigned as the row electrode scanning term of any of the row electrodes.
摘要翻译：本发明的有源矩阵型显示装置包括由电光材料制成的显示介质; 一对基板彼此相对，介于其间的显示介质; 在一个基板上以矩阵形成的多个像素电极; 多个行电极; 多个列电极; 将与各像素电极对应配置的开关元件，将对应的像素电极与对应于像素电极的列电极相连接，并通过控制端子连接到与像素电极对应的行电极 ; 行电极驱动电路，用于向每个行电极施加电压，使得相应的开关器件在分配给每个行电极的水平扫描期间仅在行电极扫描期间变为导通; 列电极驱动电路，用于根据对应于每个列电极的显示数据以占空比重复地向每个列电极施加两种电压; 以及电压切换禁止元件，用于通过列电极驱动电路抑制对列电极施加的电压的切换，至少部分水平扫描项不被分配为行中的任一行的行电极扫描项电极。

2. 发明授权

US5631670A Information display device capable of increasing detection speed and detection accuracy of input coordinates on display screen by detecting movement amount of electronic pen 失效
标题翻译：信息显示装置，通过检测电子笔的移动量，能够提高显示画面上的输入坐标的检测速度和检测精度
公开(公告)号：US5631670A
公开(公告)日：1997-05-20
申请号：US329252
申请日：1994-10-26
申请人： Akira Tomiyoshi , Takafumi Kawaguchi , Makoto Takeda
发明人： Akira Tomiyoshi , Takafumi Kawaguchi , Makoto Takeda
IPC分类号： G06F3/041 , G06F3/033 , G06F3/044 , G06F3/048 , G09G3/36 , G09G5/00
CPC分类号： G06F3/0412 , G09G3/3648
摘要： There is provided an information display device in which speed of detecting input coordinates on a display screen is increased. A coordinate detection circuit 7 detects indication coordinates at a tip end of an electronic pen 6 based on an induction voltage induced at a detection electrode of the electronic pen 6 in scanning a row electrode G and a column electrode S. A coordinate output circuit 17 obtains indication coordinates at the tip end of the electronic pen 6 based on a movement amount detection signal from a movement amount detecting section 20 of the electronic pen 6. A coordinate signal generating circuit 18 outputs an x-coordinate signal and a y-coordinate signal by combining the indication coordinates detected by the coordinate detection circuit 7 and the indication coordinates obtained by the coordinate output circuit 17. Thus by filling an interval between the indication coordinates detected by the coordinate detection circuit 7 with indication coordinates obtained by the coordinate output circuit 17, an apparent detection speed of the input coordinates can be increased.
摘要翻译：提供了一种信息显示装置，其中检测显示屏幕上的输入坐标的速度增加。坐标检测电路7基于在扫描行电极G和列电极S时在电子笔6的检测电极感应的感应电压来检测电子笔6的尖端处的指示坐标。坐标输出电路17获得基于来自电子笔6的移动量检测部20的移动量检测信号，电子笔6的前端的指示坐标。坐标信号生成电路18输出x坐标信号和y坐标信号组合由坐标检测电路7检测的指示坐标和由坐标输出电路17获得的指示坐标。因此，通过将由坐标检测电路7检测到的指示坐标之间的间隔填充到由坐标输出电路17获得的指示坐标，可以增加输入坐标的表观检测速度。

3. 发明授权

US5448024A Display-integrated type tablet device with high coordinate detection accuracy and method for driving the same 失效
标题翻译：具有高坐标检测精度的显示器集成式平板装置及其驱动方法
公开(公告)号：US5448024A
公开(公告)日：1995-09-05
申请号：US236359
申请日：1994-04-29
申请人： Takafumi Kawaguchi , Akira Tomiyoshi , Makoto Takeda
发明人： Takafumi Kawaguchi , Akira Tomiyoshi , Makoto Takeda
IPC分类号： G06F3/033 , G06F3/041 , G08C21/00 , G09G3/02
CPC分类号： G06F3/0412
摘要： A switching circuit selects a display control circuit in an image display period, and selects a detection control circuit in an x-coordinate detection period. A row electrode drive circuit outputs row electrode scanning pulses in the image display period to sequentially scan row electrodes. A column electrode drive circuit outputs column electrode scanning pulses in the x-coordinate detection period to sequentially scan column electrodes. A coordinate detection circuit detects coordinates at a tip end of a detection pen based on an induction voltage induced at a tip electrode of the detection pen due to the scanning pulses. Accordingly, by detecting a y-coordinate at the tip end of the electronic pen in the image display period and detecting the x-coordinate in the x-coordinate detection period, a display-integrated type tablet device can achieve an increase in area of its display screen, high productivity, cost reduction, and high coordinate detection accuracy.
摘要翻译：开关电路在图像显示周期中选择显示控制电路，并且在x坐标检测周期中选择检测控制电路。行电极驱动电路在图像显示周期中输出行电极扫描脉冲，以顺序扫描行电极。列电极驱动电路在x坐标检测期间输出列电极扫描脉冲，以顺序扫描列电极。坐标检测电路根据由于扫描脉冲在检测笔的尖端电极感应的感应电压来检测检测笔的前端的坐标。因此，通过在图像显示周期中检测电子笔的末端的y坐标，并且在x坐标检测期间检测x坐标，显示一体化型平板装置可以实现其在显示屏幕，高生产率，成本降低和高坐标检测精度。

4. 发明授权

US5745087A Liquid crystal display method and apparatus for controlling gray scale display 失效
标题翻译：用于控制灰度显示的液晶显示方法和装置
公开(公告)号：US5745087A
公开(公告)日：1998-04-28
申请号：US432530
申请日：1995-05-01
申请人： Akira Tomiyoshi , Takafumi Kawaguchi
发明人： Akira Tomiyoshi , Takafumi Kawaguchi
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36
CPC分类号： G09G3/3648 , G09G2320/0204 , G09G2320/0219 , G09G3/2014 , G09G3/2018
摘要： A gray scale signal duty ratio conversion section employs D flip-flops and AND gates so as to generate detection pulses for rises and falls of the gray scale signal T based on the gray scale signal T input from the control circuit and the clock signal CKT. Among the rise-detection pulses and fall-detection pulses, only the fall-detection pulses are delayed by the D flip-flop by one clock, and the delayed fall-detection pulses and the rise-detection pulses are input to an RS flip-flop so that the altered gray scale signal T' is obtained as an output of the RS flip-flop. The altered gray scale signal T' thus obtained is a signal whose HIGH period is longer than the input gray scale T by one clock. Thus, it is possible to compensate for the phenomenon associated with a TFT liquid crystal display device driven by the gray-scale driving method where a voltage applied to a liquid crystal capacitance may vary with the turning off of the TFT is from the voltage it was charged with. As a result, the liquid crystal material is prevented from being deteriorated, whereby the display quality and the reliability of the liquid crystal display device are improved.
摘要翻译：灰度信号占空比转换部分根据从控制电路和时钟信号CKT输入的灰度信号T，使用D个触发器和“与”门，以产生灰度信号T的上升和下降检测脉冲。在上升检测脉冲和下降检测脉冲中，只有下降检测脉冲被D触发器延迟一个时钟，并且延迟的下降检测脉冲和上升检测脉冲被输入到RS触发器，使得改变的灰度信号T'作为RS触发器的输出获得。如此获得的改变的灰度信号T'是其HIGH周期比输入灰度T长一个时钟的信号。因此，可以补偿与由灰度驱动方法驱动的TFT液晶显示装置相关联的现象，其中施加到液晶电容的电压可能随着TFT的截止而变化，被控。结果，防止液晶材料劣化，从而提高了液晶显示装置的显示质量和可靠性。

5. 发明授权

US6151006A Active matrix type display device and a method for driving the same 失效
标题翻译：有源矩阵型显示装置及其驱动方法
公开(公告)号：US6151006A
公开(公告)日：2000-11-21
申请号：US506211
申请日：1995-07-24
申请人： Toshihiro Yanagi , Takafumi Kawaguchi , Makoto Takeda
发明人： Toshihiro Yanagi , Takafumi Kawaguchi , Makoto Takeda
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36 , H04N5/66
CPC分类号： G09G3/3688 , G09G2310/027 , G09G2320/0204 , G09G2330/021 , G09G3/2014 , G09G3/3614
摘要： An active matrix type display device according to the present invention includes: a display panel including a plurality of pixels arranged in a matrix shape, scanning lines connected to the plurality of pixels, and signal lines connected to the plurality of pixels; and a signal line driving circuit for receiving an analog video signal and driving each signal line with a signal line driving signal corresponding to a signal level of the analog video signal. The signal line driving circuit generates a pulse signal having a duty ratio corresponding to the signal level of the analog video signal and outputs the pulse signal.
摘要翻译：根据本发明的有源矩阵型显示装置包括：显示面板，包括以矩阵形状排列的多个像素，连接到所述多个像素的扫描线以及连接到所述多个像素的信号线; 以及信号线驱动电路，用于接收模拟视频信号并用对应于模拟视频信号的信号电平的信号线驱动信号驱动每个信号线。信号线驱动电路产生具有与模拟视频信号的信号电平对应的占空比的脉冲信号，并输出脉冲信号。

6. 发明授权

US5253093A Row electrode driving circuit for a display apparatus 失效
标题翻译：用于显示装置的行电极驱动电路
公开(公告)号：US5253093A
公开(公告)日：1993-10-12
申请号：US783890
申请日：1991-10-29
申请人： Shiro Takeda , Takafumi Kawaguchi , Makoto Takeda
发明人： Shiro Takeda , Takafumi Kawaguchi , Makoto Takeda
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36 , G02F1/13 , G09G1/10
CPC分类号： G09G3/3677 , G09G2310/0283
摘要： An improved row electrode driving circuit can drive a matrix type display apparatus without necessitating digital signals transmitted between partial row electrode driving circuits. Each of the partial row electrode driving circuits is allocated with a number. In each of the partial row electrode driving circuits, shift register shifts a pulse signal to sequentially output it from a plurality of outputs. At each time when a predetermined number of clock pulses have been counted, a count signal is produced. When the shift direction is set to the upper direction, a signal indicating the allocated number is produced. When the shift direction is set to the lower direction, a signal indicating a number which is obtained by subtracting the allocated number from a specified number is produced. When this number and the clock pulse count number satisfy a predetermined relationship, the pulse signal is output.

7. 发明授权

US5166670A Column electrode driving circuit for a display apparatus 失效
标题翻译：用于显示装置的柱电极驱动电路
公开(公告)号：US5166670A
公开(公告)日：1992-11-24
申请号：US634591
申请日：1990-12-27
申请人： Shiro Takeda , Takafumi Kawaguchi , Makoto Takeda
发明人： Shiro Takeda , Takafumi Kawaguchi , Makoto Takeda
IPC分类号： G09G3/20 , G09G3/36
CPC分类号： G09G3/3688 , G09G2310/0283
摘要： An improved column electrode driving circuit can drive a matrix type display apparatus without necessitating that digital signals be transmitted between partial column electrode driving circuits. Each of the partial column electrode driving circuits is allocated with a number. In each of the partial column electrode driving circuits, a shift register shifts a sample signal to sequentially output it from a plurality of outputs. At each time when a predetermined number of clock pulses have been counted, a count signal is produced. When the shift direction is set to the right direction, a signal indicating the allocated number is produced. When the shift direction is set to the left direction, a signal indicating a number, which is obtained by subtracting the allocated number from a specified number, is produced. When this number and the clock pulse count number satisfy a predetermined relationship, the sample signal is output.

8. 发明授权

US5057928A Drive apparatus for liquid crystal display device utilizing a field discriminating apparatus 失效
标题翻译：用于液晶显示装置的驱动装置，利用现场分辨装置
公开(公告)号：US5057928A
公开(公告)日：1991-10-15
申请号：US291766
申请日：1988-12-29
申请人： Nobuyoshi Nagashima , Toshio Matsumoto , Shuhei Yasuda , Takafumi Kawaguchi , Makoto Takeda
发明人： Nobuyoshi Nagashima , Toshio Matsumoto , Shuhei Yasuda , Takafumi Kawaguchi , Makoto Takeda
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36 , H04N5/10 , H04N5/66
CPC分类号： G09G3/2011 , G09G3/3611 , G09G3/3614 , G09G3/3648 , G09G3/3655 , G09G3/3688 , H04N5/10 , G09G2310/0224 , G09G2320/0247
摘要： The invention relates to a drive apparatus for a liquid crystal display device. The voltage, to be applied to longitudinally and latitudinally arranged liquid crystal cells of the liquid crystal display device, is altered in polarity from field to field and from frame to frame, whereby the occurrence of flicker is prevented. The field discriminating device counts the numbers of lines in first and second fields by synchronizing a vertical synchronizing signal at a leading point of a field time. Thereafter the difference in the number of lines between the first and second fields is detected, the field times being thereby discriminated. When a video signal is erroneous, the field discriminating device provides a field discriminating signal, the level of which is changed alternately from field time to field time.

9. 发明授权

US4985770A Field discriminating circuitry useful in LCD displays 失效
标题翻译：现场识别电路可用于LCD显示屏
公开(公告)号：US4985770A
公开(公告)日：1991-01-15
申请号：US497220
申请日：1990-03-22
申请人： Nobuyoshi Nagashima , Toshio Matsumoto , Shuhei Yasuda , Takafumi Kawaguchi , Makoto Takeda
发明人： Nobuyoshi Nagashima , Toshio Matsumoto , Shuhei Yasuda , Takafumi Kawaguchi , Makoto Takeda
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36 , H04N5/10 , H04N5/66
CPC分类号： G09G3/2011 , G09G3/3611 , G09G3/3614 , G09G3/3648 , G09G3/3655 , G09G3/3688 , H04N5/10 , G09G2310/0224 , G09G2320/0247
摘要： The invention relates to a drive apparatus for a liquid crystal display device. The voltage, to be applied to longitudinally and latitudinally arranged liquid crystal cells of the liquid crystal display device, is altered in polarity from field to field and from frame to frame, whereby the occurrence of flicker is prevented. The field discriminating device counts the numbers of lines in first and second fields by synchronizing a vertical synchronizing signal at a leading point of a field time. Thereafter the difference in the number of lines between the first and second fields is detected, the field times being thereby discriminated. When a video signal is erroneous, the field discriminating device provides a field discriminating signal, the level of which is changed alternately from field time to field time.

10. 发明授权

US6118421A Method and circuit for driving liquid crystal panel 失效
标题翻译：液晶面板驱动方法及电路
公开(公告)号：US6118421A
公开(公告)日：2000-09-12
申请号：US721717
申请日：1996-09-27
申请人： Takafumi Kawaguchi , Toshihiro Yanagi , Makoto Takeda , Hisao Okada
发明人： Takafumi Kawaguchi , Toshihiro Yanagi , Makoto Takeda , Hisao Okada
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36
CPC分类号： G09G3/2011 , G09G3/3648 , G09G3/3655 , G09G3/3696 , G09G2310/0251 , G09G2310/027 , G09G2320/0204 , G09G2320/0209 , G09G2320/0214 , G09G3/3614
摘要： A method for driving a liquid crystal panel including a plurality of pixel electrodes arranged in a matrix, a plurality of data lines respectively connected to the pixel electrodes in a plurality of columns, a plurality of gate lines respectively connected to the pixel electrodes in a plurality of rows, and a plurality of switching devices, respectively connected to the pixel electrodes, for connecting and disconnecting the corresponding pixel electrode and the corresponding data line based on a signal sent from the corresponding gate line. The method includes the step of applying a driving voltage having a waveform corresponding to image data used for display to each data line while inverting the driving voltage gate line by gate line and frame by frame, so as to maintain an average value of the driving voltage in each frame within a certain range.
摘要翻译：一种用于驱动液晶面板的方法，所述液晶面板包括以矩阵形式布置的多个像素电极，分别连接到多个像素电极的多条数据线，分别连接到多个像素电极的多条栅极线以及分别连接到像素电极的多个开关装置，用于基于从相应的栅极线发送的信号连接和断开对应的像素电极和相应的数据线。该方法包括以下步骤：将具有对应于用于显示的图像数据的波形的驱动电压施加到每个数据线，同时通过栅极线和逐帧反相驱动电压栅极线，以便保持驱动电压的平均值在每个帧内在一定范围内。

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