CN105513541A - Oled的数据补偿电路和方法以及oled显示装置 - Google Patents

Oled的数据补偿电路和方法以及oled显示装置 Download PDF

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CN105513541A
CN105513541A CN201610105554.7A CN201610105554A CN105513541A CN 105513541 A CN105513541 A CN 105513541A CN 201610105554 A CN201610105554 A CN 201610105554A CN 105513541 A CN105513541 A CN 105513541A
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voltage
data
signal
oled
film transistor
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CN105513541B (zh
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徐京
黄泰钧
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US15/038,467 priority patent/US10223968B2/en
Priority to PCT/CN2016/076846 priority patent/WO2017143637A1/zh
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    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/30Control 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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    • G09G3/3233Control 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
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    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/121Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1213Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
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Abstract

本发明公开了一种OLED的数据补偿电路和方法以及OLED显示装置。OLED的数据补偿电路包括:传感器电路,用于侦测驱动薄膜晶体管的阈值电压的飘移量,其中驱动薄膜晶体管用于驱动OLED;时序控制器,与传感器电路连接,用于接收飘移量,并根据飘移量输出电压控制信号和源极驱动信号,源极驱动信号用于控制源极驱动器输出的数据信号的电压;参考电压输出电路,与时序控制器连接,用于根据电压控制信号输出第一参考电压,其中源极驱动器输出的数据信号的电压和第一参考电压用于补偿驱动薄膜晶体管的阈值电压的飘移量,进而实现对OLED的数据补偿。通过以上方式,本发明使得对OLED的数据补偿不再受限于源极驱动器,能够改善OLED数据补偿的效果。

Description

OLED的数据补偿电路和方法以及OLED显示装置
技术领域
本发明涉及OLED显示技术领域,特别是涉及一种OLED的数据补偿电路和方法以及OLED显示装置。
背景技术
现有技术中,数据驱动器感测每个像素的驱动薄膜晶体管(ThinFilmTransistor,TFT)的阈值电压,并根据感测到的阈值电压来补偿每个像素的数据。
然而,当计算出的补偿电压超过了数据驱动器的最大电压时,则难以对数据进行正确有效的补偿。
发明内容
本发明实施例提供了一种OLED的数据补偿电路和方法以及OLED显示装置,使得对OLED的数据补偿不再受限于源极驱动器,能够改善OLED数据补偿的效果。
本发明提供一种OLED的数据补偿电路,包括:传感器电路,用于侦测驱动薄膜晶体管的阈值电压的飘移量,其中驱动薄膜晶体管用于驱动OLED;时序控制器,与传感器电路连接,用于接收飘移量,并根据飘移量输出电压控制信号和源极驱动信号,源极驱动信号用于控制源极驱动器输出的数据信号的电压;参考电压输出电路,与时序控制器连接,用于根据电压控制信号输出第一参考电压,其中源极驱动器输出的数据信号的电压和第一参考电压用于补偿驱动薄膜晶体管的阈值电压的飘移量,进而实现对OLED的数据补偿。
其中,时序控制器还输出栅极驱动信号,栅极驱动信号用于控制栅极驱动器输出扫描信号,以控制将数据信号传输至驱动薄膜晶体管。
其中,参考电压输出电路还输出第二参考电压,第二参考电压传输至驱动薄膜晶体管的漏极。
其中,时序控制器用于:根据飘移量计算补偿电压;根据补偿电压输出电压控制信号和源极驱动信号。
其中,时序控制器用于:判断补偿电压是否超出源极驱动器输出的数据信号的电压范围;如果没有超出源极驱动器输出的数据信号的电压范围,则调整源极驱动信号以控制源极驱动器输出的数据信号的电压;如果超出源极驱动器输出的数据信号的电压范围,则调整电压控制信号以控制参考电压输出电路调整输出第一参考电压。
本发明还提供一种OLED的数据补偿方法,包括:侦测驱动薄膜晶体管的阈值电压的飘移量,其中驱动薄膜晶体管用于驱动OLED;根据飘移量输出电压控制信号和源极驱动信号,源极驱动信号用于控制源极驱动器输出的数据信号的电压;根据电压控制信号输出第一参考电压,其中源极驱动器输出的数据信号的电压和第一参考电压用于补偿驱动薄膜晶体管的阈值电压的飘移量,进而实现对OLED的数据补偿。
其中,根据电压控制信号输出第一参考电压的步骤还包括:输出第二参考电压,第二参考电压传输至驱动薄膜晶体管的漏极。
其中,根据飘移量输出电压控制信号和源极驱动信号的步骤包括:根据飘移量计算补偿电压;根据补偿电压输出电压控制信号和源极驱动信号。
其中,根据补偿电压输出电压控制信号和源极驱动信号的步骤包括:判断补偿电压是否超出源极驱动器输出的数据信号的电压范围;如果没有超出源极驱动器输出的数据信号的电压范围,则调整源极驱动信号以控制源极驱动器输出的数据信号的电压;如果超出源极驱动器的输出电压范围,则调整电压控制信号以控制参考电压输出电路调整输出第一参考电压。
本发明还提供一种OLED显示装置,包括:OLED显示面板,包括矩阵式排列的多个OLED;源极驱动器,用于输出数据信号并传输至驱动薄膜晶体管;其中,源极驱动器包括前述的OLED的数据补偿电路,用于补偿驱动薄膜晶体管的阈值电压的飘移量,进而实现对OLED的数据补偿。
通过上述方案,本发明的有益效果是:本发明通过传感器电路侦测驱动薄膜晶体管的阈值电压的飘移量,其中驱动薄膜晶体管用于驱动所述OLED;时序控制器接收飘移量,并根据飘移量输出电压控制信号和源极驱动信号,源极驱动信号用于控制源极驱动器输出的数据信号的电压;参考电压输出电路根据电压控制信号输出第一参考电压,其中源极驱动器输出的数据信号的电压和第一参考电压用于补偿驱动薄膜晶体管的阈值电压的飘移量,进而实现对OLED的数据补偿,如此使得对OLED的数据补偿不再受限于源极驱动器,能够改善OLED的数据补偿的效果。
附图说明
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。其中:
图1是本发明实施例的OLED的数据补偿电路的结构示意图;
图2是本发明实施例的OLED的数据补偿电路的工作示意图;
图3是本发明第一实施例的OLED的数据补偿方法的流程示意图;
图4是本发明第二实施例的OLED的数据补偿方法的流程示意图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性的劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
图1是本发明第一实施例的OLED的数据补偿电路的结构示意图。如图1所示,OLED的数据补偿电路包括:传感器电路11、时序控制器12以及参考电压输出电路13。传感器电路11用于侦测驱动薄膜晶体管的阈值电压的飘移量sense。其中驱动薄膜晶体管用于驱动OLED。显示面板16中包括矩阵式排列的多个OLED。时序控制器12与传感器电路11连接,用于接收飘移量sense,并根据飘移量sense输出电压控制信号ctl和源极驱动信号sc。源极驱动信号sc用于控制源极驱动器14输出的数据信号data的电压。参考电压输出电路13与时序控制器12连接,用于根据电压控制信号ctl输出第一参考电压OVSS。其中源极驱动器14输出的数据信号data的电压和第一参考电压OVSS用于补偿驱动薄膜晶体管的阈值电压的飘移量,进而实现对OLED的数据补偿。
在本发明实施例中,参考电压输出电路13还输出第二参考电压OVDD,第二参考电压OVDD传输至驱动薄膜晶体管的漏极。时序控制器12还输出栅极驱动信号gc,栅极驱动信号gc用于控制栅极驱动器15输出扫描信号scan,以控制将数据信号data传输至驱动薄膜晶体管。
在本发明实施例中,时序控制器12用于:根据飘移量sense计算补偿电压;根据补偿电压输出电压控制信号ctl和源极驱动信号sc。时序控制器12用于:判断补偿电压是否超出源极驱动器14输出的数据信号的电压范围;如果没有超出源极驱动器输出的数据信号的电压范围,则调整源极驱动信号sc以控制源极驱动器14输出的数据信号的电压;如果超出源极驱动器14输出的数据信号的电压范围,则调整电压控制信号ctl以控制参考电压输出电路13调整输出第一参考电压OVSS。
图1所示的OLED的数据补偿电路具体工作如下:
传感器电路11用于侦测驱动薄膜晶体管的阈值电压Vth的飘移量,并找反馈给时序控制器12。参考电压输出电路13产生OLED所需的第一参考电压OVSS和第二参考电压OVDD,同时能够根据电压控制信号ctl调节输出的第一参考电压OVSS的大小。时序控制器12用于接收图像数据及算法的处理产生源极驱动信号sc和栅极驱动信号gc。栅极驱动器15接收来自时序控制器12的栅极驱动信号gc,输出扫描信号scan以控制扫描线的打开。源极驱动器14接收来自时序控制器12的图像数据,输出数据信号data以配合扫描线的打开,给数据线充电,即将数据信号data传输至驱动薄膜晶体管。时序控制器12还用于接收传感器电路11侦测的驱动薄膜晶体管的阈值电压Vth的飘移量sense,并根据驱动薄膜晶体管的阈值电压Vth的飘移量sense输出电压控制信号ctl,以控制参考电压输出电路13对驱动薄膜晶体管的阈值电压Vth的飘移量sense进行补偿。
在源极驱动器14输出的数据信号data的电压的大小没有超出源极驱动器14能够输出的最大电压范围时,可以通过调整源极驱动器14输出的数据信号data的电压的大小补偿驱动薄膜晶体管阈值电压Vth的飘移。在源极驱动器14输出的数据信号data的电压的大小超出源极驱动器14能够输出的最大电压范围时,。时序控制器12根据驱动薄膜晶体管的阈值电压Vth的飘移量sense输出电压控制信号ctl,参考电压输出电路13根据电压控制信号ctl调整输出第一参考电压OVSS进而实现对驱动薄膜晶体管的阈值电压Vth的飘移量sense的补偿。
时序控制器12根据驱动薄膜晶体管的阈值电压Vth的飘移量sense输出电压控制信号ctl,以控制参考电压输出电路13对驱动薄膜晶体管的阈值电压Vth的飘移量sense进行补偿的具体实现过程如下:
参见图2,第一薄膜晶体管T1为上述的驱动薄膜晶体管。第一薄膜晶体管T1的源极S接OLED161的第一端,OLED161的第一端的第二端接第一参考电压OVSS,第一薄膜晶体管T1的漏极D通过接第二参考电压OVDD。第一薄膜晶体管T1的栅极G接第二晶体管T2的源极,第二薄膜晶体管T2的栅极接扫描信号scan,第二薄膜晶体管T2的漏极接数据信号data。第一薄膜晶体管T1的栅极G还接第三薄膜晶体管T3的源极,第三薄膜晶体管T3的漏极接模数转换器ADC。第三薄膜晶体管T3的栅极用于侦测第一薄膜晶体管T1的阈值电压的飘移量sense。其中第三薄膜晶体管与模数转换器ADC构成传感器电路11。
OLED161的数据补偿电路的具体工作过程如下:
OLED161的电流Ioled的关系式如下:
Ioled=k(Voled–Vth_oled)α
其中,k、α为常数,Voled为OLED161两端的电压差;Vth_oled为OLED的阈值电压。
当第一参考电压OVSS电压降低时,OLED161两端的电压差增大,引起OLED161的电流增大。
又由于该电流由OLED161和驱动薄膜晶体管T1共同决定。驱动薄膜晶体管T1的电流Ids的关系式如下:
Ids=K(Vgs-Vth)2=K(Vg-Vs-Vth)2
其中,Vgs为驱动薄膜晶体管T1栅极与源极的电压差,Vth为驱动薄膜晶体管T1的阈值电压,Vg为驱动薄膜晶体管T1栅极的电压,Vs为驱动薄膜晶体管T1源极的电压。
当Vg保持不变,而电流变大时,Vs就会被拉低。因此将Vs降低,就可以达到Vgs-Vth不变的效果。
例如,假设驱动薄膜晶体管T1的阈值电压Vth飘移了1V,且源极驱动器的输出的数据信号data的最大电压为10V。那么为了驱动薄膜晶体管T1的补偿阈值电压Vth的飘移,源极驱动器输出的数据信号data的电压应该在原本电压基础上提升1V。如果要输出的数据信号的电压为10V,为了补偿驱动薄膜晶体管T1的阈值电压Vth的飘移,其对应的补偿电压应为11V。然而,11V超出了源极驱动器输出的数据信号data的电压范围。此时,无法通过源极驱动器输出的数据信号data的电压有效地实现对驱动薄膜晶体管T1的阈值电压Vth的飘移的补偿。此时可以将第一参考电压OVSS的电压降低1V,进而带动驱动薄膜晶体管Vs电压降低1V,从而达到Vgs-Vth不变的效果。
本发明实施例中,在源极驱动器14输出的数据信号data的电压的大小超出源极驱动器14能够输出的最大电压范围时,时序控制器12根据驱动薄膜晶体管的阈值电压Vth的飘移量sense控制参考电压输出电路13根据电压控制信号ctl调整输出第一参考电压OVSS进而实现对驱动薄膜晶体管的阈值电压Vth的飘移量sense的补偿,使得对OLED的数据补偿不受限于源极驱动器,能够改善对OLED进行数据补偿的效果。
本发明实施例还提供一种OLED显示装置,包括:OLED显示面板、源极驱动器以及前述的OLED的数据补偿电路。其中OLED显示面板包括矩阵式排列的多个OLED。源极驱动器用于输出数据信号并传输至驱动薄膜晶体管。其中,OLED的数据补偿电路用于补偿所述驱动薄膜晶体管的阈值电压的飘移量,进而实现对OLED的数据补偿。OLED显示装置还包括栅极驱动器,控制OLED显示面板的扫描线的打开,使源极驱动器能够通过输出的数据信号给OLED显示面板的数据线充电。OLED显示装置的具体结构参见图1,在此不再赘述。
图3是本发明第一实施例的OLED的数据补偿方法的流程示意图。如图3所示,OLED的数据补偿方法包括:
步骤S10:侦测驱动薄膜晶体管的阈值电压的飘移量,其中驱动薄膜晶体管用于驱动OLED。OLED的第一端接驱动薄膜晶体管的源极,第二端接第一参考电压。OLED两端的电压差为第一端的电压减去第二端的电压,要对OLED进行数据补偿,通过增加第一端的电压,或者是降低第二端的电压都能够实现。
步骤S11:根据飘移量输出电压控制信号和源极驱动信号,源极驱动信号用于控制源极驱动器输出的数据信号的电压。
在步骤S11中还输出栅极驱动信号,栅极驱动信号用于控制栅极驱动器输出扫描信号,以控制将数据信号传输至驱动薄膜晶体管。具体地,根据扫描信号控制OLED显示面板的扫描线的打开,源极驱动器配合扫描线的打开将数据信号传输至驱动薄膜晶体管的栅极。数据信号的电压越大,驱动薄膜晶体管的栅极与源极的电压差也就越大,能够补偿驱动薄膜晶体管的阈值电压的飘移量,即增加OLED的第一端的电压,在第一参考电压不变时,OLED两端的电压差也就越大,进而能够对OLED进行数据补偿。
步骤S12:根据电压控制信号输出第一参考电压,其中源极驱动器输出的数据信号的电压和第一参考电压用于补偿驱动薄膜晶体管的阈值电压的飘移量,进而实现对OLED的数据补偿。
在源极驱动器输出的数据信号的电压的大小超出源极驱动器能够输出的最大电压范围时,不能再通过调整源极驱动器输出的数据信号的电压来实现对OLED的数据补偿。此时可以通过降低OLED的第二端的电压,即降低第一参考电压。
在步骤S12中,还输出第二参考电压,第二参考电压传输至驱动薄膜晶体管的漏极。
在本发明实施例中,根据飘移量计算补偿电压;然后根据补偿电压输出电压控制信号和源极驱动信号。具体地,判断补偿电压是否超出源极驱动器输出的数据信号的电压范围。如果没有超出源极驱动器输出的数据信号的电压范围,则调整源极驱动信号以控制源极驱动器输出的数据信号的电压,即通过增加OLED的第一端的电压来实现对OLED的数据补偿。如果超出源极驱动器的输出电压范围,则调整电压控制信号以控制参考电压输出电路调整输出第一参考电压,即通过降低OLED的第二端的电压来实现对OLED的数据补偿,如此使得对OLED的数据补偿不再受限于源极驱动器,能够改善OLED的数据补偿的效果。
更详细地,参见图4,OLED的数据补偿方法包括:
步骤S200:开始补偿。
步骤S201:侦测驱动薄膜晶体管的阈值电压Vth的飘移量。
在本发明实施例中,OLED的第一端连接驱动薄膜晶体管的源极,OLED的第二端连接第二参考电压。OLED两端的电压差为第一端的电压减去第二端的电压。要对OLED进行数据补偿,通过增加第一端的电压,或者是降低第二端的电压都能够实现。
步骤S202:根据飘移量计算补偿电压。
步骤S203:判断补偿电压是否超出数据信号的电压范围。如果是,则执行步骤S204;如果否,则执行步骤S205。
步骤S204:调节第一参考电压以实现补偿。
具体地,根据飘移量调节第一参考电压,即通过降低OLED的第二端的电压来实现对OLED的数据补偿。
步骤S205:通过源极驱动器调整输出的数据信号的电压实现补偿。
具体地,通过源极驱动器增加输出的数据信号的电压,在扫描线打开时传输至驱动薄膜晶体管的栅极,增加了驱动薄膜晶体管栅极的电压,在第一参考电压不变时,能够补偿驱动薄膜晶体管的阈值电压的飘移,进而实现对OLED的数据补偿,使得对OLED的数据补偿不再受限于源极驱动器,能够改善OLED的数据补偿的效果。
综上所述,本发明通过传感器电路侦测驱动薄膜晶体管的阈值电压的飘移量,其中驱动薄膜晶体管用于驱动所述OLED;时序控制器接收飘移量,并根据飘移量输出电压控制信号和源极驱动信号,源极驱动信号用于控制源极驱动器输出的数据信号的电压;参考电压输出电路根据电压控制信号输出第一参考电压,其中源极驱动器输出的数据信号的电压和第一参考电压用于补偿驱动薄膜晶体管的阈值电压的飘移量,进而实现对OLED的数据补偿,如此使得对OLED的数据补偿不再受限于源极驱动器,能够改善OLED的数据补偿的效果。
以上所述仅为本发明的实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。

Claims (10)

1.一种OLED的数据补偿电路,其特征在于,所述数据补偿电路包括:
传感器电路,用于侦测驱动薄膜晶体管的阈值电压的飘移量,其中所述驱动薄膜晶体管用于驱动所述OLED;
时序控制器,与所述传感器电路连接,用于接收所述飘移量,并根据所述飘移量输出电压控制信号和源极驱动信号,所述源极驱动信号用于控制源极驱动器输出的数据信号的电压;
参考电压输出电路,与所述时序控制器连接,用于根据所述电压控制信号输出第一参考电压,其中所述源极驱动器输出的所述数据信号的电压和所述第一参考电压用于补偿所述驱动薄膜晶体管的阈值电压的飘移量,进而实现对所述OLED的数据补偿。
2.根据权利要求1所述的数据补偿电路,其特征在于,所述时序控制器还输出栅极驱动信号,所述栅极驱动信号用于控制栅极驱动器输出扫描信号,以控制将所述数据信号传输至所述驱动薄膜晶体管。
3.根据权利要求1所述的数据补偿电路,其特征在于,所述参考电压输出电路还输出第二参考电压,所述第二参考电压传输至所述驱动薄膜晶体管的漏极。
4.根据权利要求1所述的数据补偿电路,其特征在于,所述时序控制器用于:
根据所述飘移量计算补偿电压;
根据所述补偿电压输出所述电压控制信号和所述源极驱动信号。
5.根据权利要求4所述的数据补偿电路,其特征在于,所述时序控制器用于:
判断所述补偿电压是否超出所述源极驱动器输出的所述数据信号的电压范围;
如果没有超出所述源极驱动器输出的所述数据信号的电压范围,则调整所述源极驱动信号以控制所述源极驱动器输出的所述数据信号的电压;
如果超出所述源极驱动器输出的所述数据信号的电压范围,则调整所述电压控制信号以控制所述参考电压输出电路调整输出所述第一参考电压。
6.一种OLED的数据补偿方法,其特征在于,所述方法包括:
侦测驱动薄膜晶体管的阈值电压的飘移量,其中所述驱动薄膜晶体管用于驱动所述OLED;
根据所述飘移量输出电压控制信号和源极驱动信号,所述源极驱动信号用于控制源极驱动器输出的数据信号的电压;
根据所述电压控制信号输出第一参考电压,其中所述源极驱动器输出的所述数据信号的电压和所述第一参考电压用于补偿所述驱动薄膜晶体管的阈值电压的飘移量,进而实现对所述OLED的数据补偿。
7.根据权利要求6所述的方法,其特征在于,所述根据所述电压控制信号输出第一参考电压的步骤还包括:
输出第二参考电压,所述第二参考电压传输至所述驱动薄膜晶体管的漏极。
8.根据权利要求6所述的方法,其特征在于,所述根据所述飘移量输出电压控制信号和源极驱动信号的步骤包括:
根据所述飘移量计算补偿电压;
根据所述补偿电压输出所述电压控制信号和所述源极驱动信号。
9.根据权利要求8所述的方法,其特征在于,所述根据所述补偿电压输出所述电压控制信号和所述源极驱动信号的步骤包括:
判断所述补偿电压是否超出所述源极驱动器输出的所述数据信号的电压范围;
如果没有超出所述源极驱动器输出电压范围,则调整所述源极驱动信号以控制所述源极驱动器输出的所述数据信号的电压;
如果超出所述源极驱动器输出的所述数据信号的电压范围,则调整所述电压控制信号以控制所述参考电压输出电路调整输出所述第一参考电压。
10.一种OLED显示装置,其特征在于,所述装置包括:
OLED显示面板,包括矩阵式排列的多个OLED;
源极驱动器,用于输出数据信号并传输至驱动薄膜晶体管;
其中,所述源极驱动器包括如权利要求1-5任一项所述的OLED的数据补偿电路,用于补偿所述驱动薄膜晶体管的阈值电压的飘移量,进而实现对所述OLED的数据补偿。
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