CN106469537B - 显示装置 - Google Patents

显示装置 Download PDF

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CN106469537B
CN106469537B CN201610697196.3A CN201610697196A CN106469537B CN 106469537 B CN106469537 B CN 106469537B CN 201610697196 A CN201610697196 A CN 201610697196A CN 106469537 B CN106469537 B CN 106469537B
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source drivers
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display device
common transmission
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CN106469537A (zh
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权用重
尹祯培
崔正熙
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LX Semicon Co Ltd
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Silicon Works Co Ltd
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    • 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
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    • G09G3/3258Control 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 voltage across the light-emitting element
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    • 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
    • G09G3/32Control 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]
    • G09G3/3208Control 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]
    • G09G3/3275Details of drivers for data electrodes
    • G09G3/3291Details of drivers for data electrodes in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements
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    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G5/006Details of the interface to the display terminal
    • G09G5/008Clock recovery
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264Details of driving circuits
    • G09G2310/027Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
    • GPHYSICS
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    • GPHYSICS
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    • GPHYSICS
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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

公开了一种显示装置,其能够向多个源极驱动器分配唯一信息并容易地控制操作序列和操作时间。显示装置包括:计时控制器,被配置成产生输入信号并向源极驱动器提供输入信号,输入信号具有嵌入在数据信号之间的时钟信号,数据信号各自包括像素数据包和控制数据包;和源极驱动器,被配置成接受输入信号、感测显示面板的像素信息、并能够响应于包含在控制数据包中的预设信息而向计时控制器发送像素信息,且被配置成在与包含在控制数据包中的操作时间信息对应的操作时间期间向计时控制器发送像素信息。

Description

显示装置
技术领域
本发明涉及一种显示装置,且更特别地,涉及一种通过向多个源极驱动器分配唯一信息而能够易于控制操作序列和操作时间的显示装置。
背景技术
通常,显示装置包括显示面板、栅极驱动器、源极驱动器和计时控制器。
显示面板包括包括栅极线和数据线,栅极驱动器向栅极线提供栅极驱动电压,且源极驱动器向数据线提供数据电压。计时控制器向源极驱动器提供数据信号。
源极驱动器将从计时控制器提供的数据信号转换成数据电压,并将数据电压提供给显示面板。
源极驱动器包括:数字模拟转换器(DAC),被配置成将从计时控制器提供的数据信号转换成数据电压;和输出电路,被配置成向显示面板输出数据电压向。
显示装置使用进位输入/输出方案向计时控制器提供多个源极驱动器从显示面板感测的像素信息。当输入进位信号时,每个源极驱动器向计时控制器发送像素信息。当完成发送时,源极驱动器向下一个源极驱动器输出进位信号以发送像素信息。
由于显示装置使用进位输入/输出方案,所以不能控制多个源极驱动器的操作序列和操作时间。因此,存在对能够控制多个源极驱动器的操作序列和操作时间的装置的需求。
发明内容
各个实施方式涉及一种能够向多个源极驱动器分配唯一信息并容易地控制操作序列和操作时间的显示装置。
此外,各个实施方式涉及一种能够不包括用于进位输入/输出的信号线的显示装置。
在一实施方式中,显示装置可以包括:计时控制器,被配置成产生输入信号并向源极驱动器提供输入信号,输入信号具有嵌入在数据信号之间的时钟信号,数据信号各自包括像素数据包和控制数据包;和源极驱动器,被配置成接受输入信号、感测显示面板的像素信息、并能够响应于包含在控制数据包中的预设信息而向计时控制器发送像素信息,且被配置成在与包含在控制数据包中的操作时间信息对应的操作时间期间向计时控制器发送像素信息。
在一实施方式中,显示装置可以包括:计时控制器,被配置成分别向多个源极驱动器分配唯一信息,并向各个源极驱动器提供控制数据包,控制数据包包含唯一信息以及序列信息和操作时间信息中的至少一个;和多个源极驱动器,被配置成恢复控制数据包,响应于唯一信息和序列信息中的至少一个被选择性地激活,并被配置成在与操作时间信息对应的操作信息期间向计时控制器提供从显示面板感测的像素信息。
附图说明
图1是示出根据本发明的一实施方式的显示装置的方框图;
图2是示出图1的源极驱动器的方框图;
图3是示出根据本发明的另一实施方式的显示装置的方框图。
具体实施方式
下面,将参考附图详细描述本发明的实施方式。在本说明书和权利要求中所用的术语不限于典型的字典定义,而是必须被解释为与本发明的技术理念相一致的意义和概念。
在本说明书中和附图中示出的配置中描述的实施方式是本发明的优选实施方式,而不代表本发明的整个技术理念。因此,可以在提交本申请时提供能够替换所述实施方式和所述配置的各种等价物和修改。
图1是示出根据本发明的实施方式的显示装置的方框图。
参考图1,根据本发明的实施方式的显示装置包括计时控制器10、多个源极驱动器SD1至SDN和显示面板20。
计时控制器10向多个源极驱动器SD1至SDN提供输入信号CED1至CEDN。可以通过时钟嵌入数据信令(CEDS)协议(其中数据信号被嵌入在数据信号之间)提供输入信号CED1至CEDN。数据信号可以包括像素数据包和控制数据包CP。像素数据包可以包括像素数据RWGB,且控制数据包CP可以包括以下各项中的至少一个:用于将像素数据转换成驱动信号以驱动显示面板的控制信息、用于识别源极驱动器SD1至SDN的唯一信息、和用于发送源极驱动器SD1至SDN的像素信息PI的操作时间信息。
在本实施方式中,可以将一部分控制数据包CP用作用于识别源极驱动器SD1至SDN的唯一信息或用于确定操作序列以发送像素信息的序列信息。
例如,可以将控制数据包CP的至少一个特定比特用作用于识别源极驱动器SD1至SDN的唯一信息或用于确定操作序列以发送像素信息的序列信息。当特定比特是“LLLL”时,可以选择源极驱动器SD1;当特定比特是“LLLH”时,可以选择源极驱动器SD2;当特定比特是“LLHL”时,可以选择源极驱动器SD3;当特定比特是“HHHH”时,可以选择源极驱动器SD16。
以这种方式,根据本实施方式的显示装置可以设定:使得源极驱动器SD1至SDN被相继选择的操作序列:使得源极驱动器SD1至SDN在其之间具有间隔地被选择的操作序列,或设定使得源极驱动器SD1至SDN当其操作彼此重叠时被选择的操作序列。即,显示装置能够容易地改变源极驱动器SD1至SDN的操作序列。
在本实施方式中,可以将一部分控制数据包CP用作用于发送源极驱动器SD1至SDN的像素信息的操作时间信息。
例如,可以将控制数据包CP的至少一个特定比特用作用于发送像素信息的操作时间信息。在这种情况下,当特定比特是“LL”时,可以在所恢复的时钟信号的1/4周期期间发送像素信息;当特定比特是“LH”时,可以在所恢复的时钟信号的半周期期间发送像素信息;当特定比特是“HL”时,可以在所恢复的时钟信号的一个周期期间发送像素信息;当特定比特是“HH”时,可以停止像素信息的发送。
以这种方式,根据本发明的显示装置能够确定指示是否在时钟信号的1/4周期、半周期、一个周期期间发送像素信息的操作时间,且能够容易地控制操作时间。可以以源极驱动器SD1至SDN的每个具有相同或不同的操作时间的方式设定操作时间信息。
可以通过差分信令方法或单端型信令方法来发送输入信号CED1至CEDN,且包括在输入信号CED1至CEDN中的时钟信号和数据信号可以具有相同的振幅等级。
对于时钟训练(CT)段和数据传输段以不同的格式发送输入信号CED1至CEDN。输入信号CED1至CEDN在CT段中具有仅包含时钟信号的格式,而在数据传输段中具有包含嵌入在数据信号之间的时钟信号的格式。
计时控制器在输入信号CED1至CEDN中可以包括控制数据包CP并通过CEDS协议向源极驱动器SD1至SDN发送输入信号CED1至CEDN,控制数据包CP包含关于源极驱动器SD1至SDN的唯一信息、序列信息和操作时间信息中的至少一个。在本实施方式中,计时控制器发送包括控制数据包CP的输入信号CED1至CEDN。然而,可以通过单独的控制线(未示出)向源极驱动器SD1至SDN提供控制数据包CP。
源极驱动器SD1至SDN将来自输入信号CED1至CEDN的数据信号和时钟信号恢复,将包括在数据信号中的像素数据RWGB转换成数据电压,并将数据电压提供给显示面板20。
源极驱动器SD1至SDN感测显示面板20的像素信息,并响应于包含在数据信号中的控制数据包CP通过共用传输线总线(BUS-LINE)将像素信息提供给计时控制器。共用传输线BUS-LINE由源极驱动器SD1至SDN共用。
因此,源极驱动器SD1至SDN使用包括在控制数据包CP中的唯一信息、序列信息和操作信息中的至少一个占用共用传输线BUS-LINE。例如,源极驱动器SD1至SDN可以响应于唯一信息或序列信息相继占用共用传输线BUS-LINE,在其之间具有间隔地占用共用传输线,或当其操作彼此重叠时占用共用传输线。
源极驱动器SD1至SDN的内部配置将被描述如下。为了便于描述,源极驱动器SD1的描述可以代替其它源极驱动器SD2至SDN的描述。
图2是示出图1的源极驱动器SD1的方框图。
参考图2,源极驱动器SD1包括控制单元30、数据转换单元32、采样电路42和ADC40。
控制单元30将来自输入信号CED1的数据信号恢复,并将来自输入信号CED1的时钟信号恢复,数据信号包括像素数据包和控制数据包CP。
控制单元30将像素数据包和时钟信号提供给数据转换单元32,并将控制数据包CP提供给ADC40。例如,控制单元30可以包括用于恢复时钟信号的时钟信号恢复单元(未示出)和用于响应于通过时钟信号恢复单元产生的采样时钟信号而恢复数据信号的数据恢复单元(未示出)。控制单元30可以包括用于计算操作时间的计时器(未示出)。
数据转换单元32包括锁存器34、DAC 36和输出电路38。数据转换单元32的锁存器34将通过控制单元30恢复的像素数据包锁存,并将所锁存的包提供给DAC 36。DAC 36将像素数据包转换成数据电压,并将数据电压提供给输出电路38。输出电路38将数据电压缓冲并将所缓冲的电压输出至显示面板20。
采样电路42感测显示面板20的像素信息PI,并将像素信息PI提供给ADC40。像素信息PI可以包括像素电压。像素电压用于补偿显示面板20。
例如,当显示面板20实施为OLED面板时,OLED面板包括用于每个像素的OLED和驱动晶体管。当施加数据电压以接通驱动晶体管时,OLED发光。驱动晶体管可以具有阈值电压Vth,且各个像素的驱动晶体管的阈值电压可以彼此不同。因此,尽管施加了相同的数据电压,由于它们之间的阈值电压差,各个像素的驱动晶体管的电流可以彼此不同。此外,由于它们之间的阈值电压差,各个像素可以具有不同的照度。为了补偿电压差,由采样电路42感测的像素电压被用于计算驱动晶体管的阈值电压,且阈值电压被用于补偿显示面板20。
ADC 40将通过采样电路42感测的像素信息转换成数字信号,且响应于控制数据包CP将像素信息PI提供给计时控制器10。ADC 40响应于用于识别源极驱动器SD1至SDN的唯一信息或用于确定操作序列以发送像素信息(包括在控制数据包CP中)被激活,并响应于源极驱动器SD1至SDN的操作时间信息(包括在控制数据包CP中)在所恢复的时钟信号的预定周期期间向计时控制器10发送像素信息PI。
如此,源极驱动器SD1根据包括在控制数据包CP中的序列信息或唯一信息被激活(而不使用进位输入/输出方案),并根据包括在控制数据包CP中的操作时间信息将像素信息PI提供给计时控制器10。其它的源极驱动器SD2至SDN也根据包括在控制数据包CP中的序列信息或唯一信息被激活,并根据包括在控制数据包CP中的操作时间信息将像素信息PI提供给计时控制器10。
因此,由于源极驱动器SD1至SDN根据包括在控制数据包CP中的序列信息或唯一信息被选择性地激活,所以能够单独地控制源极驱动器SD1至SDN,并且能够容易地改变操作序列。
此外,由于显示装置能够根据包括在控制数据包CP中的操作时间信息确定操作时间,并根据操作时间信息将像素信息PI提供给计时控制器,所以显示装置能够容易地控制操作时间。
此外,由于唯一信息、序列信息或操作时间信息被包括在控制数据包CP中,所以能够排除用于进位输入/输出的单独的进位信号线。
在本实施方式中,显示装置可以提供源极驱动器SD1至SDN从显示面板20感测的像素信息PI。然而,显示装置可以提供源极驱动器SD1至SDN的状态信息。
此外,显示装置能够使用包括在控制数据包CP中的序列信息或唯一信息来改变操作序列和操作时间,并将像素信息PI提供给计时控制器。例如,显示装置能够改变操作序列和操作时间,使得源极驱动器SD1至SDN被相继操作、被间隔地操作、或当其操作重叠时***作。
当源极驱动器SD1至SDN被相继操作时,用于识别源极驱动器SD1至SDN的控制数据包CP的特定比特可以以“LLLL”、“LLLH”至“HHHH”的形式被相继提供,使得源极驱动器SD1至SDN被相继选择。
此外,当源极驱动器SD1至SDN在其之间具有间隔地***作时,用于识别源极驱动器SD1至SDN的控制数据包CP的特定比特可以以“LLLL”、“LLHL”或“LHLL”的形式被提供,或以“LLLL”、“LLHH”或“LHLH”的形式被提供,使得源极驱动器SD1至SDN在其之间具有间隔地被选择。
图3示出了根据本发明的另一实施方式的显示装置的方框图。具体地,图3示出了一种显示装置,其包括多个共用传输线BUS-LINE从而增加数据传输速率并操作源极驱动器SD1至SDN使得其操作彼此重叠。
参考图3,显示装置可以提供控制数据包CP,用于将源极驱动器SD1至SDN识别为分别与共用传输线BUS-LINE#1和BUS-LINE#2连接的第一组源极驱动器和第二组源极驱动器。因此,当第一组和第二组的源极驱动器SD1至SDN的操作彼此重叠时,它们可以被同时操作。
具体地,可以将控制数据包CP的特定比特作为“LLLL”提供给源极驱动器SD1和SDN-2,并将其作为“LLLH”提供给源极驱动器SD2和SDN-1,从而识别源极驱动器SD1至SDN。然后,可以通过共用传输线BUS-LINE#1和BUS-LINE#2同时接收像素信息PI。图3示出了两个共用传输线,当本发明不限于此。
由于用于识别源极驱动器SD1至SDN的唯一信息或用于确定操作序列以发送像素信息的的序列信息被包括在控制数据包CP中,根据本实施方式的限制装置可以容易地改变源极驱动器SD1至SDN的操作序列。在本实施方式中,发送包含数据信号的控制数据包CP。然而,可以通过单独的控制线(未示出)将数据信号提供给源极驱动器SD1至SDN。
根据本实施方式,由于响应于控制数据包(包括唯一信息或序列信息或源极驱动器的操作时间信息)将像素信息提供给计时控制器,显示装置能够排除用于进位输入/输出的信号线。
此外,显示装置能够单独地控制多个驱动器,并能够容易地控制操作序列和操作时间。
虽然上文已经描述了各种实施方式,本领域技术人员将理解的是,所描述的实施方式仅仅当作举例。因此,在此描述的公开不应基于所描述的实施方式而受到限制。

Claims (14)

1.一种显示装置,包括:
计时控制器,被配置成产生输入信号并向多个源极驱动器提供所述输入信号,所述输入信号具有嵌入在数据信号之间的时钟信号,所述数据信号各自包括像素数据包和控制数据包;和
所述多个源极驱动器,被配置成接收所述输入信号、感测来自显示面板的像素信息、并能够响应于包含在所述控制数据包中的用于识别所述多个源极驱动器的唯一信息和用于确定操作序列的序列信息中的至少一个而向所述计时控制器发送所述像素信息,且被配置成在与包含在所述控制数据包中的用于确定操作时间的操作时间信息对应的所述操作时间期间向所述计时控制器发送所述像素信息,
其中,所述多个源极驱动器中的每一个包括:
采样电路,被配置成感测来自所述显示面板的所述像素信息;和
模数转换器,被配置成响应于所述控制数据包中的所述唯一信息而激活,并在所述操作时间期间向所述计时控制器发送由所述采样电路从所述显示面板感测到的所述像素信息,所述操作时间通过所述控制数据包中的所述操作时间信息来确定。
2.根据权利要求1所述的显示装置,其中所述控制数据包包括下列各项中的至少一个:用于识别所述多个源极驱动器的所述唯一信息,用于确定所述操作序列以发送所述像素信息的所述序列信息,和用于基于所述时钟信号的周期确定所述操作时间的操作时间信息。
3.根据权利要求1所述的显示装置,其中所述操作时间信息被设定为针对所述多个源极驱动器中的相应的源极驱动器被控制。
4.根据权利要求3所述的显示装置,其中所述多个源极驱动器中的每一个还包括:
控制单元,被配置成从所述输入信号恢复所述数据信号和所述时钟信号;
数据转换单元,被配置成响应于所恢复的时钟信号而向所述显示面板提供所恢复的数据信号。
5.根据权利要求1所述的显示装置,还包括由所述多个源极驱动器共用的共用传输线,
其中所述多个源极驱动器响应于所述唯一信息来占用所述共用传输线,并在所述操作时间期间通过所述共用传输线向所述计时控制器提供所述像素信息。
6.根据权利要求5所述的显示装置,其中所述多个源极驱动器响应于所述唯一信息相继占用所述共用传输线,与另一源极驱动器间隔地占用所述共用传输线,或当其操作与另一源极驱动器的操作重叠时占用所述共用传输线。
7.根据权利要求5所述的显示装置,其中所述多个源极驱动器在与所述操作时间信息对应的所述时钟信号的预定周期期间占用所述共用传输线,从而发送所述像素信息。
8.根据权利要求1所述的显示装置,还包括:
第一共用传输线,由所述多个源极驱动器中的第一组源极驱动器共用;和
第二共用传输线,由所述多个源极驱动器中的第二组源极驱动器共用,
其中所述第一组源极驱动器和所述第二组源极驱动器被配置成响应于所述唯一信息和所述序列信息中的至少一个而分别占用所述第一共用传输线和第二共用传输线。
9.根据权利要求8所述的显示装置,其中所述第一组源极驱动器和所述第二组源极驱动器被配置成当其操作彼此重叠时同时提供所述像素信息。
10.一种显示装置,包括:
计时控制器,被配置成分配用于分别标识多个源极驱动器中的每一个的唯一信息,并向所述多个源极驱动器中的相应的源极驱动器提供控制数据包,所述控制数据包包含唯一信息、序列信息和操作时间信息中的至少一个;和
所述多个源极驱动器,被配置成恢复所述控制数据包,响应于所述唯一信息和所述序列信息中的至少一个被选择性地激活,并被配置成在与所述操作时间信息对应的操作信息期间向所述计时控制器提供从显示面板感测的像素信息,
其中,所述多个源极驱动器中的每一个包括:
采样电路,被配置成感测来自所述显示面板的所述像素信息;和
模数转换器,被配置成响应于所述控制数据包中的所述唯一信息而激活,并在所述操作时间期间向所述计时控制器发送由所述采样电路从所述显示面板感测到的所述像素信息,所述操作时间通过所述控制数据包中的所述操作时间信息来确定。
11.根据权利要求10所述的显示装置,其中所述计时控制器被配置成通过单独的控制线向所述源极驱动器提供所述控制数据包。
12.根据权利要求10所述的显示装置,其中所述多个源极驱动器通过共用传输线向所述计时控制器提供所述像素信息,且响应于所述唯一信息和所述序列信息中的至少一个占用所述共用传输线。
13.根据权利要求12所述的显示装置,还包括第一共用传输线和第二共用传输线,
其中所述第一共用传输线由所述多个源极驱动器中的第一组源极驱动器共用,且所述第二共用传输线由所述多个源极驱动器中的第二组源极驱动器共用。
14.根据权利要求13所述的显示装置,其中所述第一组源极驱动器和所述第二组源极驱动器响应于所述唯一信息和所述序列信息中的至少一个来占用所述第一共用传输线和第二共用传输线,并当其操作彼此重叠时同时向所述计时控制器提供所述像素信息。
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