公开(公告)号：US07215307B2

公开(公告)日：2007-05-08

申请号：US10412677

申请日：2003-04-14

申请人： Hideo Ochi ,  Masami Tsuchida ,  Shinichi Ishizuka ,  Tsuyoshi Sakamoto

发明人： Hideo Ochi ,  Masami Tsuchida ,  Shinichi Ishizuka ,  Tsuyoshi Sakamoto

IPC分类号： G09G3/30

CPC分类号： G09G3/3216 ,  G09G3/20 ,  G09G3/3283 ,  G09G2310/0256 ,  G09G2320/029 ,  G09G2320/043 ,  G09G2330/021

摘要： A drive unit which can prevent the decrease of the luminance of a self-luminous device due to degradation or a change is electric characteristic thereof. The drive unit has a semiconductor device having an electric characteristic almost the same as the that of the self-luminous device, and drives the semiconductor device in accordance with the frequency of light emission of the self-luminous device. The device generates a characteristic change detection signal indicating the degree of a change in an electric characteristic of the semiconductor device, and supplies the self-luminous device with a drive signal having a current level or a voltage level based on the characteristic change detection signal.

摘要翻译： 可以防止由于劣化或变化引起的自发光器件的亮度降低的驱动单元的电气特性。 驱动单元具有与自发光器件几乎相同的电特性的半导体器件，并且根据自发光器件的发光频率驱动半导体器件。 该装置产生表示半导体器件的电特性变化程度的特性变化检测信号，并且基于特性变化检测信号向自发光器件提供具有电流电平或电压电平的驱动信号。

公开(公告)号：US07274363B2

公开(公告)日：2007-09-25

申请号：US10322776

申请日：2002-12-19

申请人： Shinichi Ishizuka ,  Masami Tsuchida ,  Hideo Ochi ,  Tsuyoshi Sakamoto

发明人： Shinichi Ishizuka ,  Masami Tsuchida ,  Hideo Ochi ,  Tsuyoshi Sakamoto

IPC分类号： G09G5/00

CPC分类号： G09G3/3233 ,  G09G3/2011 ,  G09G3/2022 ,  G09G2310/0221 ,  G09G2310/04 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/043 ,  G09G2320/0693

摘要： A display panel driving device and driving method for providing high quality images without irregular luminance even after long-time use. The value of the light-emission drive current flowing when causing each light-emission elements bearing each pixel to independently emit light in succession is measured, then the luminance is corrected for each input pixel data based on the above light-emission drive current values, associated with the pixels corresponding to the input pixel data. According to another aspect, the voltage value of the drive voltage is adjusted in such a manner that one value among each measured light-emission drive current value becomes equal to a predetermined reference current value. According to a further aspect, the current value is measured while an off-set current component corresponding to a leak current of the display panel is added to the current outputted from the drive voltage generator circuit and the resultant current is supplied to each of the pixel portions.

摘要翻译： 一种显示面板驱动装置和驱动方法，即使在长时间使用之后也能提供高质量的图像而没有不规则的亮度。 测量使带有各像素的各发光元件依次独立地发光的流动的发光驱动电流的值，然后基于上述发光驱动电流值对每个输入像素数据校正亮度， 与对应于输入像素数据的像素相关联。 根据另一方面，调节驱动电压的电压值，使得每个测量的发光驱动电流值中的一个值变得等于预定的参考电流值。 根据另一方面，测量电流值，同时将与显示面板的泄漏电流相对应的偏移电流分量加到从驱动电压发生器电路输出的电流中，并将所得到的电流提供给每个像素 部分。

公开(公告)号：US06756951B1

公开(公告)日：2004-06-29

申请号：US09615592

申请日：2000-07-13

申请人： Shinichi Ishizuka ,  Masami Tsuchida ,  Tsuyoshi Sakamoto ,  Hideo Ochi

发明人： Shinichi Ishizuka ,  Masami Tsuchida ,  Tsuyoshi Sakamoto ,  Hideo Ochi

IPC分类号： G09G320

CPC分类号： G09G3/3216 ,  G09G3/3283 ,  G09G2310/0221 ,  G09G2310/04 ,  G09G2320/0233 ,  G09G2330/02 ,  G09G2330/022

摘要： A display apparatus and a driving circuit of a display panel, in which even when an anode line driving circuit is made of a plurality of IC chips, light emission luminance values on the display panel can be uniformed. The display apparatus is made of a plurality of driving circuits having a plurality of light-emission drive current sources each for generating a light-emission drive current to allow a light emitting element of the display panel to emit the light and supplying the light-emission drive current to first electrode lines of the display panel. At least one of the driving circuits is provided with a drive current control circuit for adjusting a current amount of the light-emission drive current to be generated by the driving circuit on the basis of the light-emission drive current generated from the other driving circuit.

摘要翻译： 显示面板的显示装置和驱动电路，即使阳极线驱动电路由多个IC芯片构成，显示面板上的发光亮度值也可以均匀化。 显示装置由具有多个发光驱动电流源的多个驱动电路构成，每个发光驱动电流源用于产生发光驱动电流，以允许显示面板的发光元件发光并提供发光 驱动电流到显示面板的第一电极线。 至少一个驱动电路设置有驱动电流控制电路，用于根据从另一个驱动电路产生的发光驱动电流来调节由驱动电路产生的发光驱动电流的电流量 。

公开(公告)号：US06806852B2

公开(公告)日：2004-10-19

申请号：US09969735

申请日：2001-10-04

申请人： Shinichi Ishizuka ,  Masami Tsuchida ,  Hideo Ochi

发明人： Shinichi Ishizuka ,  Masami Tsuchida ,  Hideo Ochi

IPC分类号： G09G332

CPC分类号： G09G3/3208 ,  G09G3/20 ,  G09G5/10 ,  G09G2320/043 ,  G09G2330/021 ,  G09G2360/16 ,  G09G2360/18

摘要： Improvement for extending the service life of a self-emitting panel and for reducing the power consumption thereof. The self-emitting panel is driven based on intensity-reduced data. The intensity-reduced data is obtained by applying intensity reduction processing on each frame of the image frame data to be displayed.

摘要翻译： 改进以延长自发光面板的使用寿命并降低其功耗。 基于强度降低的数据驱动自发光面板。 通过对要显示的图像帧数据的每个帧应用强度降低处理来获得强度减小的数据。

公开(公告)号：US06429837B1

公开(公告)日：2002-08-06

申请号：US09289656

申请日：1999-04-12

申请人： Shinichi Ishizuka ,  Yoshinori Fukuda ,  Satoshi Miyaguchi ,  Hideo Ochi ,  Taizo Ishida ,  Masami Tsuchida

发明人： Shinichi Ishizuka ,  Yoshinori Fukuda ,  Satoshi Miyaguchi ,  Hideo Ochi ,  Taizo Ishida ,  Masami Tsuchida

IPC分类号： G09G322

CPC分类号： G09G3/32 ,  H01L27/3281 ,  H01L51/52 ,  H01L2251/568

摘要： A method is provided for driving a luminescent display which includes a plurality of luminescent units adapted to be selected for light emission, so as to display an image. This method is characterized in that during a predetermined period, a reverse voltage having a direction opposite to that of a voltage to be applied for light emission of a luminescent unit, is applied to each luminescent unit.

摘要翻译： 提供一种用于驱动发光显示器的方法，其包括适于被选择用于发光的多个发光单元，以便显示图像。 该方法的特征在于，在预定时段内，向每个发光单元施加具有与用于发光单元的发光的电压的方向相反的方向的反向电压。

公开(公告)号：US06771235B2

公开(公告)日：2004-08-03

申请号：US09985152

申请日：2001-11-01

申请人： Shinichi Ishizuka ,  Tsuyoshi Sakamoto ,  Hideo Ochi

发明人： Shinichi Ishizuka ,  Tsuyoshi Sakamoto ,  Hideo Ochi

IPC分类号： G09G330

CPC分类号： G09G3/3216 ,  G09G3/2014 ,  G09G3/3266 ,  G09G3/3283 ,  G09G2310/0256 ,  G09G2320/02 ,  G09G2320/0233 ,  G09G2320/043

摘要： An apparatus for driving a display panel having drive lines and capacitive light emitting elements. The apparatus sequentially selects one scanning line from the scanning lines every scanning period of input video data including a gradation level to specify a drive line corresponding to at least one capacitive light emitting element driven to emit light on the one scanning line in accordance with the input video data, generates a driving signal having a pulse width in accordance with the gradation level every scanning period, and applies the one capacitive light emitting element with a voltage equal to or higher than a light emission threshold voltage in a forward direction for a duration in which the driving signal is generated, through the one scanning line and the specified drive line, and applies the specified drive line with a predetermined potential in response to elimination of the driving signal to decrease the voltage applied to the one capacitive light emitting element in the forward direction to a voltage lower than the light emission threshold voltage.

摘要翻译： 一种用于驱动具有驱动线和电容发光元件的显示面板的装置。 该装置依次从扫描行中选择一条扫描行，每个扫描行包括灰度等级的输入视频数据的每个扫描周期，以指定与至少一个电容发光元件相对应的驱动线，该电容发光元件根据输入被驱动以在一条扫描线上发光 视频数据产生具有根据每个扫描周期的灰度级别的脉冲宽度的驱动信号，并将具有等于或高于发光阈值电压的电容式发光元件在正向上施加一段持续时间 通过一条扫描线和指定的驱动线产生驱动信号，并且响应于消除驱动信号而施加具有预定电位的指定驱动线，以降低施加到该驱动信号中的一个电容发光元件的电压 向前方向到低于发光阈值电压的电压。

公开(公告)号：US07193590B2

公开(公告)日：2007-03-20

申请号：US10863353

申请日：2004-06-09

申请人： Shinichi Ishizuka ,  Tsuyoshi Sakamoto ,  Hideo Ochi

发明人： Shinichi Ishizuka ,  Tsuyoshi Sakamoto ,  Hideo Ochi

IPC分类号： G09G3/30 ,  G09G3/10

CPC分类号： G09G3/3216 ,  G09G3/2014 ,  G09G3/3266 ,  G09G3/3283 ,  G09G2310/0256 ,  G09G2320/02 ,  G09G2320/0233 ,  G09G2320/043

摘要： An apparatus for driving a display panel having drive lines and capacitive light emitting elements. The apparatus sequentially selects one scanning line from the scanning lines every scanning period of input video data including a gradation level to specify a drive line corresponding to at least one capacitive light emitting element driven to emit light on the one scanning line in accordance with the input video data, generates a driving signal having a pulse width in accordance with the gradation level every scanning period, and applies the one capacitive light emitting element with a voltage equal to or higher than a light emission threshold voltage in a forward direction for a duration in which the driving signal is generated, through the one scanning line and the specified drive line, and applies the specified drive line with a predetermined potential in response to elimination of the driving signal to decrease the voltage applied to the one capacitive light emitting element in the forward direction to a voltage lower than the light emission threshold voltage.

摘要翻译： 一种用于驱动具有驱动线和电容发光元件的显示面板的装置。 该装置依次从扫描行中选择一条扫描行，每个扫描行包括灰度等级的输入视频数据的每个扫描周期，以指定与至少一个电容发光元件相对应的驱动线，该电容发光元件根据输入被驱动以在一条扫描线上发光 视频数据产生具有根据每个扫描周期的灰度级别的脉冲宽度的驱动信号，并将具有等于或高于发光阈值电压的电容式发光元件在正向上施加一段持续时间 通过一条扫描线和指定的驱动线产生驱动信号，并且响应于消除驱动信号而施加具有预定电位的指定驱动线，以降低施加到该驱动信号中的一个电容发光元件的电压 向前方向到低于发光阈值电压的电压。

公开(公告)号：US07109955B2

公开(公告)日：2006-09-19

申请号：US10727630

申请日：2003-12-05

申请人： Shinichi Ishizuka ,  Hideo Ochi ,  Tsuyoshi Sakamoto

发明人： Shinichi Ishizuka ,  Hideo Ochi ,  Tsuyoshi Sakamoto

IPC分类号： G09G3/30

CPC分类号： G09G3/3216 ,  G09G3/3266 ,  G09G3/3283 ,  G09G5/02 ,  G09G2310/0251 ,  G09G2310/0256 ,  G09G2320/0233 ,  G09G2320/0252 ,  G09G2320/043 ,  G09G2320/0606 ,  G09G2320/0666 ,  G09G2320/0693

摘要： A driving apparatus for a multi-color light-emitting display panel including drive lines and scanning lines intersecting with each other, and capacitive light-emitting elements which have polarities connected to the scanning lines and the drive lines at the intersections and which are divided into a plurality of types by a color of light emission, the capacitive light-emitting elements of the same type being arranged on each drive line. The drive apparatus comprises a scanning circuit for selectively supplying a first potential and a second potential higher than the first potential to each of the scanning lines, and a drive circuit for selectively supplying a drive current from a current source and a third potential for an offset voltage not higher than a light emission threshold voltage of the element to each of the drive lines, the drive current and the third potential are variable.

摘要翻译： 包括驱动线和扫描线彼此交叉的多色发光显示面板的驱动装置，以及具有连接到扫描线和交叉路口的驱动线的极性的电容性发光元件，并被分成 通过发光颜色的多种类型，相同类型的电容发光元件被布置在每个驱动线上。 驱动装置包括用于向每个扫描线选择性地提供高于第一电位的第一电位和第二电位的扫描电路，以及用于选择性地从电流源提供驱动电流和用于偏移的第三电位的驱动电路 不高于元件对每个驱动线的发光阈值电压的电压，驱动电流和第三电位是可变的。

公开(公告)号：US06707438B1

公开(公告)日：2004-03-16

申请号：US09624194

申请日：2000-07-24

申请人： Shinichi Ishizuka ,  Hideo Ochi ,  Tsuyoshi Sakamoto

发明人： Shinichi Ishizuka ,  Hideo Ochi ,  Tsuyoshi Sakamoto

IPC分类号： G09G330

CPC分类号： G09G3/3216 ,  G09G3/3266 ,  G09G3/3283 ,  G09G5/02 ,  G09G2310/0251 ,  G09G2310/0256 ,  G09G2320/0233 ,  G09G2320/0252 ,  G09G2320/043 ,  G09G2320/0606 ,  G09G2320/0666 ,  G09G2320/0693

摘要： A driving apparatus for a multi-color light-emitting display panel including drive lines and scanning lines intersecting with each other, and capacitive light-emitting elements which have polarities connected to the scanning lines and the drive lines at the intersections and which are divided into a plurality of types by a color of light emission, the capacitive light-emitting elements of the same type being arranged on each drive line. The drive apparatus comprises a scanning circuit for selectively supplying a first potential and a second potential higher than the first potential to each of the scanning lines, and a drive circuit for selectively supplying a drive current from a current source and a third a potential for an offset voltage not higher than a light emission threshold voltage of the element to each of the drive lines, the drive current and the third potential are variable.

摘要翻译： 包括驱动线和扫描线彼此交叉的多色发光显示面板的驱动装置，以及具有连接到扫描线和交叉路口的驱动线的极性的电容性发光元件，并被分成 通过发光颜色的多种类型，相同类型的电容发光元件被布置在每个驱动线上。 驱动装置包括用于向每个扫描线选择性地提供高于第一电位的第一电位和第二电位的扫描电路，以及用于选择性地从电流源提供驱动电流的驱动电路和用于 不高于元件的发光阈值电压到每个驱动线的偏移电压，驱动电流和第三电位是可变的。

公开(公告)号：US06473064B1

公开(公告)日：2002-10-29

申请号：US09247825

申请日：1999-02-11

申请人： Masami Tsuchida ,  Shinichi Ishizuka

发明人： Masami Tsuchida ,  Shinichi Ishizuka

IPC分类号： G09G332

CPC分类号： G09G3/3216 ,  G09G3/22 ,  G09G3/3266 ,  G09G3/3283 ,  G09G2310/0251 ,  G09G2310/0256 ,  G09G2320/0233 ,  G09G2320/0252 ,  G09G2320/043 ,  G09G2330/04

摘要： A light emitting display device having a plurality of light emitting elements connected to intersecting points of a plurality of anode lines and cathode lines arranged in a matrix. Either one of the anode lines and the cathode lines are used as scanning lines, and the others are used as driving lines. While one of the scanning lines is scanned during a scanning period, a driving source is synchronously connected to one of the driving lines so that a light emitting element connected to an intersecting point of the one scanning line and the one driving line is caused to emit light. Immediately after the scanning period of the one scanning line is started, a first driving source is connected to the one driving line, and subsequently, in exchange for the first driving source, a second driving source is connected to the one driving line.

摘要翻译： 一种发光显示装置，具有连接到以矩阵形式布置的多个阳极线和阴极线的交点的多个发光元件。 将阳极线和阴极线中的任一个用作扫描线，其它的用作驱动线。 当在扫描周期期间扫描一条扫描线时，驱动源与其中一条驱动线路同步连接，使得连接到一条扫描线和一条驱动线的交叉点的发光元件被发射 光。 在一条扫描线的扫描周期开始之后，将第一驱动源连接到一条驱动线，然后，为了交换第一驱动源，将第二驱动源连接到一条驱动线。