CN100419837C - 显示器件及其显示驱动器件 - Google Patents
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- 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
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- 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
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- 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
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- 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]
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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
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。
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EP02078455.9 | 2002-08-21 | ||
EP02078455 | 2002-08-21 |
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US (1) | US20050285821A1 (zh) |
EP (1) | EP1532610A2 (zh) |
JP (1) | JP2005536771A (zh) |
KR (1) | KR20050058355A (zh) |
CN (1) | CN100419837C (zh) |
AU (1) | AU2003247108A1 (zh) |
TW (1) | TWM250271U (zh) |
WO (1) | WO2004019310A2 (zh) |
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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)
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)
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 |
-
2003
- 2003-07-18 CN CNB038196352A patent/CN100419837C/zh not_active Expired - Fee Related
- 2003-07-18 JP JP2004530422A patent/JP2005536771A/ja active Pending
- 2003-07-18 KR KR1020057002769A patent/KR20050058355A/ko not_active Application Discontinuation
- 2003-07-18 WO PCT/IB2003/003277 patent/WO2004019310A2/en active Application Filing
- 2003-07-18 US US10/525,141 patent/US20050285821A1/en not_active Abandoned
- 2003-07-18 EP EP03792541A patent/EP1532610A2/en not_active Withdrawn
- 2003-07-18 AU AU2003247108A patent/AU2003247108A1/en not_active Abandoned
- 2003-08-18 TW TW092214911U patent/TWM250271U/zh not_active IP Right Cessation
Patent Citations (8)
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 |
Also Published As
Publication number | Publication date |
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EP1532610A2 (en) | 2005-05-25 |
US20050285821A1 (en) | 2005-12-29 |
KR20050058355A (ko) | 2005-06-16 |
CN1689062A (zh) | 2005-10-26 |
AU2003247108A8 (en) | 2004-03-11 |
WO2004019310A3 (en) | 2004-04-22 |
TWM250271U (en) | 2004-11-11 |
AU2003247108A1 (en) | 2004-03-11 |
JP2005536771A (ja) | 2005-12-02 |
WO2004019310A2 (en) | 2004-03-04 |
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