CN100419837C - 显示器件及其显示驱动器件 - Google Patents

显示器件及其显示驱动器件 Download PDF

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CN100419837C
CN100419837C CNB038196352A CN03819635A CN100419837C CN 100419837 C CN100419837 C CN 100419837C CN B038196352 A CNB038196352 A CN B038196352A CN 03819635 A CN03819635 A CN 03819635A CN 100419837 C CN100419837 C CN 100419837C
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A·塞佩
P·J·斯尼德
R·洛斯
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Koninklijke Philips NV
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    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2011—Display of intermediate tones by amplitude modulation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3216—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using a passive matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3275—Details of drivers for data electrodes
    • G09G3/3283—Details of drivers for data electrodes in which the data driver supplies a variable data current for setting the current through, or the voltage across, the light-emitting elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • G09G3/3241—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror

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Abstract

在一用于发光显示的驱动器中，使用了反馈技术尤其是使用控制放大器(25)技术来降低电源电压。

Description

显示器件及其显示驱动器件
技术领域
本发明涉及一种包括至少一个图像元件的显示器件和一种包括与所述图像元件进行串接的驱动晶体管的显示驱动器件。
这种显示器件越来越依赖于基于场致发光的半导体有机材料，其也被已知为发光二极管(polyLED或OLED)。该显示器件不但能够通过分段像素(或固定图案)发光，而且还能够借助于矩阵图案进行显示。对二极管电流的调节通常确定了将由像素发射的光的强度。
所述显示器件的适用领域例如是移动电话、管理器等。
背景技术
开头段落中所述类型的显示器件在美国专利6014119中有所描述。在所述文献中，流过LED的电流借助于电流控制来调节。对于发光像素矩阵中的每列像素，包括一双极性晶体管和一电阻器的电流驱动器被提供作为驱动电路的一部分。代替双极晶体管，也可使用MOS-或TFT-晶体管。
为了获得可再现的灰度等级，对于某一确定的灰度值来说所述电流必须基本上是恒定的。这就是为什么晶体管在恒定的电流区域中使用的原因。在该情况下，使用了高源-漏电压(或者在双极晶体管的情况下为发射极-集电板电压)。这使得晶体管的偏压对于由例如像素二极管的正向特性的变化而引起的漏极电压的变化或驱动器的供给电压的变化不敏感。另一方面，高漏-源电压(或者在双极晶体管的情况下为发射极-集电极电压)增加了功率消耗。
发明内容
因此本发明的目的是提供一种在开头段落中所述的类型的显示器件，其中由漏-源电压(恒流制输出电压)引起的功率消耗只对总功率消耗增加了一较少的程度。为此，在根据本发明的显示器件中，显示驱动器包括用于监视和控制所述第一电流路径中的电流的装置。
在一优选实施例中，所述驱动晶体管的一控制接线与一控制放大器的输出端相耦合，所述控制放大器的每个输入接线分别与第一和第二电流路径相耦合。通过将第一和第二电流路径中的电流相比较，控制放大器此时强迫第一电流路径中的电流获得某一确定的电流，同时漏-源电压(恒流制输出电压)可以比在饱和区域中的应用所需要的低。这导致较低的功率消耗。所述控制放大器可以通过现有技术中已知的许多不同的方式来实现(比较器、差分放大器、等)。
在另一个实施例中，适于有源驱动第一电流路径中的电流受电荷控制所控制，例如受借助于已经流进一第二电路部件中的电流而存储的电荷控制。
附图说明
本发明的这些和其他方面通过下述的实施例的说明将变得显而易见，并且将参照这样的实施例来对其进行说明。
附图中：
图1示意的表示根据本发明的一显示器件；
图2表示一显示驱动器件的一部分；
图3表示根据本发明的显示驱动器件的一第一实施例；
图4表示在图2、3的实施例中所使用的晶体管的晶体管特性；
图5和6表示根据本发明的显示驱动器件的其它实施例；和
所述各幅图是示意性的；相同的元件一般由相同的附图标记表示。
具体实施方式
图1示意的表示根据本发明的显示器件1的一部分的等效电路示图。该显示器件包括一n行(1，2，......，n)m列(1，2，......，m)的(P)LED或(O)LED4的阵列。该器件进一步包括一行选择电路6和一数据寄存器5。外部呈现的信息7例如视频信号在处理单元8中进行处理，所述处理单元8根据将被显示的信息通过线路9对数据寄存器5的各个部分5-1，......，5-n进行充电。
行的选择是通过线路3借助于行选择电路6进行的，在该例子中是通过向它们提供所需的选择电压实现的(被动寻址)。
写入数据的过程是这样的，即在选择过程中，被看作是理想电流源的电流源10例如通过开关(未示)借助于数据寄存器5被开启。电流值由数据寄存器的内容确定并通过数据线2提供给LED4。
电流开关10可以是只包括一个晶体管和一个电阻器的简单类型。如导言中所解释的，为了使晶体管的偏压对由例如像素二极管的正向特性的变化所引起的漏极电压的变化或驱动器的供给电压的变化不敏感，其所需要的高漏-源电压就增加了功率消耗。
图2表示一公知的包括一第一电流路径(晶体管19和LED4)的器件。电流Io流过LED4并确定了图像元件的光强度。虚线21示意的表示图2中的显示区域。
第二电流路径包括一电流源(晶体管11和电阻器22)和一电流镜输入级，其包括一二极管，它是通过将晶体管13的栅极端14和漏极端15进行短路实现的(如果需要，还可包括一个电阻器23)。栅极端16上的电压决定了该第二电流路径中的电流Ii。因为可以将晶体管13、19(连同电阻器23一起，如果需要，还可包括另一个电阻器24)看作是电流镜，所以第一电流路径中的电流Io按比例与电流Ii进行耦合，所述比例是由两个晶体管的k因数确定的。为了降低所需的漏-源电压(恒流制输出电压)Vda＝Vcom，晶体管19的驱动电压(Vga-Vth，Vth：临界电压)必须是小的。在两个电流路径中，可并入电阻器23、24，如虚线所示。
使用具有大k因数的晶体管可增大集成驱动电路所需的面积，因为所需的芯片面积与k～W/1成比例。
图3表示根据本发明的再次包括一第一电流路径(晶体管19和LED4)的器件的一优选实施例。电流Io流进LED4并确定了图像元件的光强度。虚线21示意的表示图2中的显示区域。
第一和第二电流路径现在通过控制放大器25彼此耦合。控制放大器25通过电阻器24(R2)测量输出电流Io，并通过电阻器24上的电压将它与通过电阻器23(R1)测量的电流Ii进行比较。然后控制放大器25借助于Vga的控制迫使所述输出晶体管19获得Io＝Ii(R1/R2)。所以第一电流路径中的电流Io按比例(R1/R2)与电流Ii相耦合。
这种反馈允许较大的Vda值。这在图4中相关的示出。当对于Io在饱和边缘使用时，Vda值在点x处被偏压。由于对于Io在该(最大)值处的反馈机制，如果需要，以关于对于具有较高Io(例如在点y处)但还未进入饱和区域的Vds值的Id-Vds曲线对Vgs值进行偏压，所以当设计所述驱动器时，可不必考虑对于该较高Io的较高漏-源电压(恒流制输出电压)。
所以该反馈机制允许较大的Vga值。结果，较低的k值也是可能的，因此获得了较低的耗散和较小的芯片面积。
本发明可应用于有源和无源器件、矩阵和分段显示器件。在一种如图5所示的有源矩阵中，其表示一单个(子)图像元件，额外的开关例如(TFT)开关28、29、30、33和35可被用于选择所述图像元件和给一额外电容26充电。在选择过程中，晶体管19和开关28与29是导通的，这是由选择线路2确定的。包括晶体管24、电容26、晶体管19和开关28与29的电路确定了电流路径，该电流路径受数据输入端8的控制以定义一电流I数据。电容26被充电至由电阻器24两端的电压所确定的电压。在选择之后(在保持周期中)，开关28、29、35是不导通的，而开关20、33现在是导通的。在电容器26上残存的电荷现在以这样一种方式对控制放大器25进行控制：反馈机制将电流源19、24中的电流维持在I数据，因此也就将LED4中的电流维持在I数据。
在图6的实施例中，其再次表示一单个(子)图像元件，额外的开关28、29和31被用于选择图像元件和给额外的电容器26充电。在选择期间，晶体管19和开关28和29再次是导通的，这是由选择线路8确定的。包括晶体管24、电容器26、晶体管19和开关28与29的电路再次确定了一个电流路径，该路经受选择线路2的控制以再次通过数据输入端8定义一个电流I数据并给电容器26充电。在选择之后(在保持周期中)，开关28、29都是不导通的，而开关31此时将电容器26与控制放大器25(无源输入)相连接。电容器26上残存的电荷再次以与先前的实施例相同的方式控制控制放大器25。
本发明的保护范围不局限于所述的实施例。代替在第一实施例中测量电流Io和Ii，也可测量这些电流的分数。
本发明也可应用于场发射器件和其它基于电流驱动的器件。
本发明在于每个和各个新颖的典型特征及其每个和各个特征的结合。权利要求中的附图标记并不限制这些权利要求的保护范围。动词“包括”及其变化形式的使用并不排除在权利要求中所述的那些元件之外的元件的存在。在元件之前所使用的冠词“一”和“一个”并不排除多个这样的元件的存在。

Claims (4)

1. 一种显示器件，包括至少一个图像元件和一个显示驱动器件，该显示驱动器件包括一个在一第一电流路径中与所述图像元件串接的驱动晶体管，所述显示驱动器件包括用于监视和控制所述第一电流路径中的电流的装置，其中，在操作中所述第一电流路径中的电流受借助于已经流进一第二电路部件的电流而存储的控制电荷的控制，所述驱动晶体管的一控制接线与一控制放大器的输出端相耦合，所述控制放大器的一个输入接线与存储所述控制电荷的电容器相耦合，而所述控制放大器的另一输入接线被耦合到第一电流路径。
2. 根据权利要求1所述的显示器件，其中所述驱动晶体管为场效应晶体管，其栅极接线为所述控制接线。
3. 根据权利要求1所述的显示器件，其中所述图像元件是一发光元件，所述第一电流确定了所述发光元件的亮度。
4. 一种显示驱动器件，包括一用于通过第一电流路径驱动一图像元件的驱动晶体管，其中在操作中第一电流路径中的电流受借助于已经流进一第二电路部件的电流而存储的控制电荷的控制，并且其中所述驱动晶体管的一控制接线与一控制放大器的输出端相耦合，所述控制放大器的一个输入接线与一存储所述控制电荷的电容器相耦合，而所述控制放大器的另一输入接线被耦合到第一电流路径。
CNB038196352A 2002-08-21 2003-07-18 显示器件及其显示驱动器件 Expired - Fee Related CN100419837C (zh)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1793367A3 (en) * 2005-12-02 2009-08-26 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device
US7995012B2 (en) * 2005-12-27 2011-08-09 Semiconductor Energy Laboratory Co., Ltd. Light emitting device
US7583034B2 (en) * 2006-09-26 2009-09-01 Semiconductor Components Industries, L.L.C. LED controller and method therefor
WO2019008624A1 (ja) * 2017-07-03 2019-01-10 シャープ株式会社 表示装置およびその画素回路

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5723950A (en) * 1996-06-10 1998-03-03 Motorola Pre-charge driver for light emitting devices and method
US5886474A (en) * 1995-10-13 1999-03-23 Sony Corporation Luminescent device having drive-current controlled pixels and method therefor
CN1216135A (zh) * 1997-01-28 1999-05-05 卡西欧计算机株式会社 电致发光显示装置及其激励方法
US5923308A (en) * 1996-11-12 1999-07-13 Motorola, Inc. Array of leds with active pull down shadow canceling circuitry
US5949194A (en) * 1996-05-16 1999-09-07 Fuji Electric Co., Ltd. Display element drive method
EP1164565A1 (en) * 1999-10-20 2001-12-19 TDK Corporation Constant-current device, display device, and method for driving the same
US6373454B1 (en) * 1998-06-12 2002-04-16 U.S. Philips Corporation Active matrix electroluminescent display devices
JP2002207451A (ja) * 2001-01-09 2002-07-26 Hitachi Ltd 有機ｌｅｄディスプレイおよびその駆動方法

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60198872A (ja) * 1984-03-23 1985-10-08 Seiko Instr & Electronics Ltd Ｌｅｄ駆動用ｍｏｓ集積回路
JPS61156198A (ja) * 1984-12-28 1986-07-15 富士通株式会社 表示用発光素子制御装置
JPH01255371A (ja) * 1988-04-05 1989-10-12 Fujitsu Ltd 発光ダイオードのドライブ方式
JPH02218183A (ja) * 1989-02-17 1990-08-30 Mitsubishi Electric Corp Ｌｅｄ駆動用ｍｏｓ集積回路
EP0771459A2 (en) * 1995-05-19 1997-05-07 Koninklijke Philips Electronics N.V. Display device
JP3688757B2 (ja) * 1995-06-29 2005-08-31 Ｔｄｋ株式会社 画像表示装置およびその駆動方法
JP3636777B2 (ja) * 1995-07-04 2005-04-06 Ｔｄｋ株式会社 画像表示装置
US6310589B1 (en) * 1997-05-29 2001-10-30 Nec Corporation Driving circuit for organic thin film EL elements
US6097360A (en) * 1998-03-19 2000-08-01 Holloman; Charles J Analog driver for LED or similar display element
JPH11272223A (ja) * 1998-03-26 1999-10-08 Toyota Motor Corp 発光ディスプレイ用電源装置
JP2000081608A (ja) * 1998-06-29 2000-03-21 Sanyo Electric Co Ltd 集光機構付液晶表示装置
DE19930661A1 (de) * 1999-07-02 2001-01-18 Siemens Ag Meßumformer
JP4376385B2 (ja) * 1999-11-15 2009-12-02 富士通株式会社 発光素子駆動回路
US6528951B2 (en) * 2000-06-13 2003-03-04 Semiconductor Energy Laboratory Co., Ltd. Display device
JP2002040988A (ja) * 2000-07-24 2002-02-08 Canon Electronics Inc 有機ｅｌ素子の駆動装置
GB2367414A (en) * 2000-09-28 2002-04-03 Seiko Epson Corp Display device using TFT's
JP2002156944A (ja) * 2000-11-21 2002-05-31 Canon Inc 発光素子駆動回路
US6717559B2 (en) * 2001-01-16 2004-04-06 Visteon Global Technologies, Inc. Temperature compensated parallel LED drive circuit
JP3819723B2 (ja) * 2001-03-30 2006-09-13 株式会社日立製作所 表示装置及びその駆動方法
US6847171B2 (en) * 2001-12-21 2005-01-25 Seiko Epson Corporation Organic electroluminescent device compensated pixel driver circuit
JP3887229B2 (ja) * 2001-12-28 2007-02-28 沖電気工業株式会社 電流駆動型表示装置の駆動回路
US6841947B2 (en) * 2002-05-14 2005-01-11 Garmin At, Inc. Systems and methods for controlling brightness of an avionics display

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5886474A (en) * 1995-10-13 1999-03-23 Sony Corporation Luminescent device having drive-current controlled pixels and method therefor
US5949194A (en) * 1996-05-16 1999-09-07 Fuji Electric Co., Ltd. Display element drive method
US5723950A (en) * 1996-06-10 1998-03-03 Motorola Pre-charge driver for light emitting devices and method
US5923308A (en) * 1996-11-12 1999-07-13 Motorola, Inc. Array of leds with active pull down shadow canceling circuitry
CN1216135A (zh) * 1997-01-28 1999-05-05 卡西欧计算机株式会社 电致发光显示装置及其激励方法
US6373454B1 (en) * 1998-06-12 2002-04-16 U.S. Philips Corporation Active matrix electroluminescent display devices
EP1164565A1 (en) * 1999-10-20 2001-12-19 TDK Corporation Constant-current device, display device, and method for driving the same
JP2002207451A (ja) * 2001-01-09 2002-07-26 Hitachi Ltd 有機ｌｅｄディスプレイおよびその駆動方法

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AU2003247108A8 (en) 2004-03-11
WO2004019310A3 (en) 2004-04-22
TWM250271U (en) 2004-11-11
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JP2005536771A (ja) 2005-12-02
WO2004019310A2 (en) 2004-03-04

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