公开(公告)号：US20070222717A1

公开(公告)日：2007-09-27

申请号：US11578064

申请日：2005-04-08

申请人： Jun Maede ,  Shinichi Abe ,  Masanori Fujisawa

发明人： Jun Maede ,  Shinichi Abe ,  Masanori Fujisawa

IPC分类号： G09G3/30

CPC分类号： H05B33/0896 ,  G09G3/3216 ,  G09G3/3283 ,  G09G2320/0233

摘要： An organic EL display device has a high resolution in which an organic EL panel current is driven by a plurality of current drive ICs (current drivers). The occupation area required for the current drive circuits is suppressed and unevenness in luminance of the display screen is reduced. The EL panel has first and second current drivers which output drive currents corresponding to display data to terminal pins via output terminals to drive the organic EL panel, which are respectively provided with a plurality of output terminals and a plurality of connection switch circuits. The connection switch circuits are provided inside the organic EL panel and n (n≧1) pieces of respective output terminals for the first and second driver are alternatively switched and connected to n pieces of respective column lines (drive lines at the anode side of an organic EL element).

摘要翻译： 有机EL显示装置具有高分辨率，其中有机EL面板电流由多个电流驱动IC（电流驱动器）驱动。 抑制当前驱动电路所需的占用面积，并且显示屏的亮度不均匀性降低。 EL面板具有第一和第二电流驱动器，其通过输出端子将对应于显示数据的驱动电流输出到端子引脚，以驱动分别设置有多个输出端子和多个连接开关电路的有机EL面板。 连接开关电路设置在有机EL面板内部，并且n（n> = 1）个用于第一和第二驱动器的各个输出端子交替切换并连接到n条相应的列线（在阳极侧的驱动线 有机EL元件）。

公开(公告)号：US20070200812A1

公开(公告)日：2007-08-30

申请号：US10592143

申请日：2005-03-09

申请人： Jun Maede ,  Shinichi Abe ,  Masanori Fujisawa

发明人： Jun Maede ,  Shinichi Abe ,  Masanori Fujisawa

IPC分类号： G09G3/36

CPC分类号： H05B33/08 ,  G06F3/1423 ,  G09G3/3216 ,  G09G3/325 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2310/0221 ,  G09G2310/0251 ,  G09G2310/0297 ,  Y02B20/32

摘要： [Problem]To provide an organic EL display device, which can prevent erroneous light emission of an active matrix type display panel and reduce power consumption during the display panel switching and is effective in reducing area and thickness of the organic EL display device. [Means for Resolution]An organic EL display device having a first organic EL panel of active matrix type and a second organic EL panel includes current drive circuits having output pins commonly used by the first and second organic EL panels and switch circuits for cutting drive currents of the first organic EL panel off are provided in the first organic EL panel. According to another aspect of the present invention, the organic EL display device includes a reset circuit constructed with a D/A converter circuit and a plurality of analog switches connected to the output pins. The reset circuit resets terminal voltages of organic EL elements of the organic EL panel in responsive to externally supplied data to generate analog voltages by the D/A converter circuit and output the analog voltages as reset voltages by turning the analog switches ON in a reset period.

摘要翻译： 本发明提供一种有机EL显示装置，能够防止有源矩阵型显示面板发生错误的发光，降低显示面板切换时的功耗，有效地降低了有机EL显示装置的面积和厚度。 [分辨方法]具有有机矩阵型的第一有机EL面板和第二有机EL面板的有机EL显示装置包括具有由第一和第二有机EL面板共同使用的输出引脚的电流驱动电路和用于切断驱动电流的开关电路 在第一有机EL面板中设置第一有机EL面板。 根据本发明的另一方面，有机EL显示装置包括由D / A转换器电路和连接到输出引脚的多个模拟开关构成的复位电路。 复位电路响应于外部提供的数据来复位有机EL面板的有机EL元件的端子电压，以通过D / A转换器电路产生模拟电压，并且通过在复位时段中使模拟开关导通来将模拟电压作为复位电压输出 。

公开(公告)号：US06967604B2

公开(公告)日：2005-11-22

申请号：US10994293

申请日：2004-11-23

申请人： Jun Maede ,  Shinichi Abe ,  Masanori Fujisawa

发明人： Jun Maede ,  Shinichi Abe ,  Masanori Fujisawa

IPC分类号： G09G3/30 ,  G09G3/32 ,  H03M1/00 ,  H03M1/66 ,  H03M1/74 ,  H05B33/00

CPC分类号： G09G3/3283 ,  G09G2300/0417 ,  G09G2310/0251 ,  G09G2310/027 ,  G09G2320/0233 ,  H03M1/747

摘要： In a D/A converter circuit including a current mirror circuit constructed with an input side transistor circuit and an output side transistor circuit, the input side transistor circuit comprises a series circuit of a first MOS transistor and a second MOS transistor and a first switch circuit connected in parallel to the first MOS transistor. Gates of the first and second MOS transistors are connected commonly and a source of either one of the first and second MOS transistors is connected to a drain of the other of the first and second MOS transistors and the second MOS transistor has a gate length shorter than a gate length of the first MOS transistor.

摘要翻译： 在包括由输入侧晶体管电路和输出侧晶体管电路构成的电流镜电路的D / A转换器电路中，输入侧晶体管电路包括第一MOS晶体管和第二MOS晶体管的串联电路和第一开关电路 与第一MOS晶体管并联连接。 第一和第二MOS晶体管的栅极共同连接，并且第一和第二MOS晶体管中的任一个的源极连接到第一和第二MOS晶体管的另一个的漏极，并且第二MOS晶体管的栅极长度短于 第一MOS晶体管的栅极长度。

公开(公告)号：US20070273566A1

公开(公告)日：2007-11-29

申请号：US10594703

申请日：2005-03-28

申请人： Shinichi Abe ,  Jun Maede ,  Masanori Fujisawa ,  Akio Fujikawa

发明人： Shinichi Abe ,  Jun Maede ,  Masanori Fujisawa ,  Akio Fujikawa

IPC分类号： H03M1/74

CPC分类号： H03M1/68 ,  G09G3/3283 ,  G09G2310/027 ,  H03M1/745

摘要： [Problem] To provide a high precision D/A converter circuit capable of being driven with low voltage and restricting an area taken thereby when it is formed as an IC. [Means for Solving the Problem] A D/A converter circuit, which includes a first current mirror circuit having a plurality of output side transistors provided correspondingly to digits of data to be converted and generates an analog current by obtaining in at least one of the output side transistors a current corresponding to weight of digit of the data, comprises a second current mirror circuit connected on an upstream or down stream side of at least one of the output side transistors corresponding to lower digit of the data, wherein operating current ratio of the output side transistor of the second current mirror circuit with respect to an input side transistor thereof is set to n:1 (where n is a positive integer), wherein the analog current is generated by obtaining a current corresponding to weight of digit, which is smaller than 1, on the output side transistor of the second current mirror circuit.

摘要翻译： [问题]提供一种能够以低电压驱动的高精度D / A转换器电路，并且限制当其形成为IC时所占据的面积。 用于解决问题的方法AD / A转换器电路包括具有多个输出侧晶体管的第一电流镜电路，该多个输出侧晶体管相应于要转换的数据的数字而被提供，并通过在输出中获得至少一个来产生模拟电流 包括与数据的数字的重量相对应的电流的电流镜像电路，其连接在对应于数据的较低位的至少一个输出侧晶体管的上游侧或下游侧，其中， 将第二电流镜电路的输出侧晶体管相对于其输入侧晶体管设置为n：1（其中n为正整数），其中通过获得与数字重量相对应的电流来产生模拟电流， 小于1，在第二电流镜电路的输出侧晶体管上。

公开(公告)号：US07119769B2

公开(公告)日：2006-10-10

申请号：US10636555

申请日：2003-08-08

申请人： Shinichi Abe ,  Masanori Fujisawa ,  Jun Maede

发明人： Shinichi Abe ,  Masanori Fujisawa ,  Jun Maede

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G3/3283 ,  G09G2300/0842 ,  G09G2310/027

摘要： A drive circuit of an active matrix type organic EL display panel includes a drive current generator circuit for generating drive currents corresponding to the red, green and blue colors in a predetermined sequence in response to a RGB switching signal and a current switching circuit having a first, second and third output terminals corresponding to the respective red, green and blue colors, the current switching circuit adapted to select one of the first, second and third output terminals in the predetermined sequence in response to the RGB switching signal, generate currents for charging the capacitors of the pixel circuits for the red, green and blue colors in response to the drive currents and output the charging current to the output terminals.

摘要翻译： 有源矩阵型有机EL显示面板的驱动电路包括：驱动电流发生器电路，用于响应于RGB切换信号以预定顺序产生对应于红色，绿色和蓝色的驱动电流;以及电流切换电路，具有第一 ，第二和第三输出端子对应于相应的红色，绿色和蓝色，电流开关电路适于响应于RGB切换信号以预定顺序选择第一，第二和第三输出端子中的一个，产生用于充电的电流 用于响应于驱动电流的红色，绿色和蓝色的像素电路的电容器，并将充电电流输出到输出端子。

公开(公告)号：US07002303B2

公开(公告)日：2006-02-21

申请号：US10868899

申请日：2004-06-17

申请人： Jun Maede ,  Shinichi Abe ,  Akio Fujikawa ,  Masanori Fujisawa

发明人： Jun Maede ,  Shinichi Abe ,  Akio Fujikawa ,  Masanori Fujisawa

IPC分类号： G09G3/10 ,  G09G3/30

CPC分类号： G09G3/3283 ,  G09G2310/027 ,  G09G2320/0233 ,  H01L27/3223 ,  H01L27/3244 ,  H01L27/3281

摘要： Dummy circuits, which are not operated, are provided in transistor blocks, which are positioned in outermost side portions of a drive circuit forming area of an IC. Physical property-related stress of unit transistors constituting D/A converter circuits or the D/A converter circuits and output stage current sources, which are formed in the transistor block in an area between the outermost transistor blocks, are relatively even, so that current mirror circuits constituting the D/A converter circuits can be constructed with unit transistors having good pairing characteristics.

摘要翻译： 不操作的虚拟电路设置在位于IC的驱动电路形成区域的最外侧部分的晶体管块中。 构成D / A转换器电路的单元晶体的物理性质相关应力或形成在最外层晶体管块之间的区域中的晶体管块中的D / A转换器电路和输出级电流源相对均匀， 构成D / A转换器电路的镜像电路可以由具有良好配对特性的单位晶体管构成。

公开(公告)号：US07129916B2

公开(公告)日：2006-10-31

申请号：US10677355

申请日：2003-10-03

申请人： Jun Maede ,  Shinichi Abe ,  Masanori Fujisawa

发明人： Jun Maede ,  Shinichi Abe ,  Masanori Fujisawa

IPC分类号： G09G3/30

CPC分类号： G09G3/3216 ,  G09G3/2014 ,  G09G3/3283 ,  G09G2310/027 ,  G09G2320/0606 ,  G09G2320/0666

摘要： An organic EL element drive circuit comprises a plurality of peak current generator circuits provided correspondingly to terminal pins of an organic EL display panel, for adding peak currents corresponding to pulse widths of predetermined pulse signals and a pulse generator circuit for generating the predetermined pulse signal including a first, second and third pulses having pulse widths thereof determined according to data, which are set externally of the pulse generator circuit. The pulse generator circuit sends the first pulse to the terminal pins of the peak current generator circuits provided for R display color as the predetermined pulse, the second pulse to the peak current generator circuits provided for G display color as the predetermined pulse and the third pulse to the peak current generator circuits provided for B display color as the predetermined pulse.

摘要翻译： 有机EL元件驱动电路包括对应于有机EL显示面板的端子引脚设置的多个峰值电流发生器电路，用于添加与预定脉冲信号的脉冲宽度对应的峰值电流，以及用于产生预定脉冲信号的脉冲发生器电路，包括 第一，第二和第三脉冲，其脉冲宽度根据在脉冲发生器电路外部设置的数据确定。 脉冲发生器电路将第一脉冲发送到为R显示颜色提供的峰值电流发生器电路的端子引脚作为预定脉冲，第二脉冲发送到提供给G显示颜色的峰值电流发生器电路作为预定脉冲和第三脉冲 提供给B显示颜色的峰值电流发生器电路作为预定脉冲。

公开(公告)号：US07688289B2

公开(公告)日：2010-03-30

申请号：US10594685

申请日：2005-03-28

申请人： Shinichi Abe ,  Jun Maede ,  Masanori Fujisawa

发明人： Shinichi Abe ,  Jun Maede ,  Masanori Fujisawa

IPC分类号： G09G3/30

CPC分类号： H03M1/747 ,  G09G3/325 ,  G09G3/3283 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/027

摘要： To provide an organic EL drive circuit including D/A converter circuits capable of reducing the number of elements, which are proof against relatively high voltage, restricting an increase of circuit size and restricting variation of luminance of a display screen and an organic EL display device using the organic EL drive circuit.An organic EL drive circuit for generating, in response to a predetermined current inputted to an input terminal of a D/A converter circuit constructed with a current mirror circuit, drive currents to be outputted to terminal pins of the organic EL display panel or a current, on which the drive currents are generated, by converting digital display data into analog signal by the D/A converter circuit, comprises a first transistor provided between an input side transistor of the current mirror circuit and the input terminal, a second transistor provided between an output side transistor of the current mirror circuit and an output terminal and a third transistor provided between the output terminal and a power source line, wherein proof voltages of the input side transistor, the output side transistor and the third transistor are lower than proof voltage of the first and second transistors.

摘要翻译： 为了提供一种有机EL驱动电路，其包括能够减少相对较高电压的元件数量的D / A转换器电路，限制电路尺寸的增加和限制显示屏和有机EL显示装置的亮度变化 使用有机EL驱动电路。 一种有机EL驱动电路，用于响应于输入到由电流镜电路构成的D / A转换器电路的输入端的预定电流，产生要输出到有机EL显示面板的端子引脚的电流或电流 ，其中通过D / A转换器电路将数字显示数据转换为模拟信号，产生驱动电流，包括设置在电流镜电路的输入侧晶体管和输入端之间的第一晶体管， 电流镜电路的输出侧晶体管和输出端以及设置在输出端和电源线之间的第三晶体管，其中输入侧晶体管，输出侧晶体管和第三晶体管的校准电压低于校验电压 的第一和第二晶体管。

公开(公告)号：US20070195022A1

公开(公告)日：2007-08-23

申请号：US10591959

申请日：2005-03-09

申请人： Jun Maede ,  Shinichi Abe ,  Masanori Fujisawa

发明人： Jun Maede ,  Shinichi Abe ,  Masanori Fujisawa

IPC分类号： G09G3/32

CPC分类号： G09G3/3266 ,  G06F3/1423 ,  G09G3/3216 ,  G09G3/3275 ,  G09G2300/0426 ,  G09G2310/0221 ,  G09G2310/0251 ,  G09G2330/021

摘要： [Problem]To provide an organic EL display device which is suitable to minimize a size thereof and is capable of preventing erroneous light emission and reducing power consumption when a display is switched from one of a first and second organic EL display panels to the other. To provide an organic EL display device capable of preventing erroneous light emission with which display luminance in black level is pushed up to that in gray level. [Means for Solving the Problem]In the first invention, the current drive circuit having output pins common for the first and second organic EL panels is provided. Therefore, there is no need of providing current drive circuits for the respective first and second organic EL panels. Consequently, it is unnecessary to make the organic EL panel, which is not selected, standby state, so that it is possible to reduce power consumption correspondingly. In the second invention, the first and second organic EL panels of the organic EL display device are of the passive matrix type and first diodes for preventing reverse current flow are provided between column lines of the organic EL panels and terminal pins of the organic EL panels.

摘要翻译： 提供一种适合于使其尺寸最小化的有机EL显示装置，并且当显示器从第一和第二有机EL显示面板之一切换到另一个时，能够防止错误的发光和降低功耗。 提供一种能够防止将黑色显示亮度向上推到灰度级的错误发光的有机EL显示装置。 解决问题的手段在第一发明中，提供具有第一和第二有机EL面板共用的输出针的电流驱动电路。 因此，不需要为各自的第一和第二有机EL面板提供电流驱动电路。 因此，不需要使未被选择的有机EL面板成为待机状态，从而可以相应地降低功耗。 在第二发明中，有机EL显示装置的第一有机EL面板和第二有机EL面板是无源矩阵型的，并且在有机EL面板的列线和有机EL面板的端子针之间设置用于防止反向电流流动的第一二极管 。

公开(公告)号：US20050110665A1

公开(公告)日：2005-05-26

申请号：US10994293

申请日：2004-11-23

申请人： Jun Maede ,  Shinichi Abe ,  Masanori Fujisawa

发明人： Jun Maede ,  Shinichi Abe ,  Masanori Fujisawa

IPC分类号： G09G3/30 ,  G09G3/32 ,  H03M1/00 ,  H03M1/66 ,  H03M1/74 ,  H05B33/00

CPC分类号： G09G3/3283 ,  G09G2300/0417 ,  G09G2310/0251 ,  G09G2310/027 ,  G09G2320/0233 ,  H03M1/747

摘要： In a D/A converter circuit including a current mirror circuit constructed with an input side transistor circuit and an output side transistor circuit, the input side transistor circuit comprises a series circuit of a first MOS transistor and a second MOS transistor and a first switch circuit connected in parallel to the first MOS transistor. Gates of the first and second MOS transistors are connected commonly and a source of either one of the first and second MOS transistors is connected to a drain of the other of the first and second MOS transistors and the second MOS transistor has a gate length shorter than a gate length of the first MOS transistor.