CN101221717A - Flat panel display and driving method thereof - Google Patents
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Abstract
Description
【技术领域】【Technical field】
本发明是有关于一种平面显示器及其驱动方法,特别是有关于一种可以提升影像画面品质的平面显示器及其驱动方法。The present invention relates to a flat-panel display and a driving method thereof, in particular to a flat-panel display capable of improving image quality and a driving method thereof.
【背景技术】【Background technique】
现今平面显示器的技术发展迅速,各式各样的技术持续被发展出来。为了减少集成电路(Integrated Circuit,IC)信号线的数目以节省成本,本发明所属技术领域已出现某些非传统的面板充电电路架构。然而,在这些面板充电架构中,由于每颗画素的电路布局方式与传统的电路布局方式不同,会导致画面产生各种痕迹(mura),因而影响画面成像品质。Nowadays, the technology of flat panel displays develops rapidly, and various technologies are continuously developed. In order to reduce the number of integrated circuit (Integrated Circuit, IC) signal lines to save costs, some non-traditional panel charging circuit architectures have emerged in the technical field of the present invention. However, in these panel charging architectures, since the circuit layout of each pixel is different from the traditional circuit layout, various traces (mura) will be generated on the picture, thereby affecting the image quality of the picture.
图1为某种传统液晶显示器的示意图。如图1所示,液晶显示器100包括基板(未绘示于图)、多条数据线S1~Sm、多个扫描线G1~G2n、源极驱动单元110以及栅极驱动单元120,m及n为正整数。基板(未绘示于图)包括一画素阵列,画素阵列包括多个画素P(x,y),x及y为正整数。每一个画素P(x,y)包括一晶体管T。Figure 1 is a schematic diagram of a conventional liquid crystal display. As shown in FIG. 1, the
兹以画素阵列的第一列画素为例做说明。首先,扫描线G1被致能,画素P(1,1)、P(3,1)、P(5,1)、…、P(2m-1,1)被充电;接着,扫描线G2被致能,画素P(2,1)、P(4,1)、P(6,1)、…、P(2m,1)被充电。此时,由于电容耦合效应的存在,使得画素P(1,1)、P(3,1)、P(5,1)、…、P(2m-1,1)受到电容耦合效应的影响而改变其画素电压。如此一来,奇数行画素与偶数行画素的充电耦合程度不一致,导致影像画面因为亮度不均而造成垂直方向上的痕迹现象。The first row of pixels in the pixel array is taken as an example for illustration. First, the scan line G1 is enabled, and the pixels P(1, 1), P(3, 1), P(5, 1), ..., P(2m-1, 1) are charged; then, the scan line G2 is activated When enabled, pixels P(2,1), P(4,1), P(6,1), . . . , P(2m,1) are charged. At this time, due to the existence of the capacitive coupling effect, the pixels P(1, 1), P(3, 1), P(5, 1), ..., P(2m-1, 1) are affected by the capacitive coupling effect and Change its pixel voltage. In this way, the charging coupling degree of the odd-numbered pixels and the even-numbered pixels are inconsistent, resulting in traces in the vertical direction of the image due to uneven brightness.
【发明内容】【Content of invention】
本发明有关于一种平面显示器及其驱动方法,将平面显示器的多条扫描线分成不同的群组,然后于不同的图框周期内,利用多个移位暂存器电路,以相异的群组顺序分别致能相对应群组的扫描线,以减少影像画面的痕迹现象。The invention relates to a flat-panel display and its driving method. A plurality of scanning lines of the flat-panel display are divided into different groups, and then in different frame periods, a plurality of shift register circuits are used to achieve different The order of the groups respectively enables the scan lines corresponding to the groups, so as to reduce the trace phenomenon of the image frame.
根据本发明的一技术样态,提出一种平面显示器,包括基板、多条数据线、多个扫描线、源极驱动单元以及栅极驱动单元。基板包括一画素阵列。多条数据线电性连接至画素阵列。多个扫描线电性连接至画素阵列,此些扫描线包括多个奇数条扫描线与多个偶数条扫描线。源极驱动单元电性连接至数据线。栅极驱动单元包括第一移位暂存器电路及第二移位暂存器电路,第一移位暂存器电路用以依序致能奇数条扫描线,第二移位暂存器电路用以依序致能偶数条扫描线。于第一图框周期内,奇数条扫描线先于偶数条扫描线依序被致能,且奇数条扫描线与偶数条扫描线交错地被致能。于第二图框周期内,偶数条扫描线先于奇数条扫描线依序被致能,且奇数条扫描线与偶数条扫描线交错地被致能。According to a technical aspect of the present invention, a flat panel display is provided, including a substrate, a plurality of data lines, a plurality of scan lines, a source driving unit, and a gate driving unit. The substrate includes a pixel array. Multiple data lines are electrically connected to the pixel array. A plurality of scan lines are electrically connected to the pixel array, and the scan lines include a plurality of odd scan lines and a plurality of even scan lines. The source driving unit is electrically connected to the data line. The gate drive unit includes a first shift register circuit and a second shift register circuit, the first shift register circuit is used to sequentially enable an odd number of scan lines, and the second shift register circuit It is used to enable even scan lines in sequence. In the first frame period, the odd scan lines are sequentially enabled before the even scan lines, and the odd scan lines and the even scan lines are enabled alternately. In the second frame period, the even scan lines are sequentially enabled before the odd scan lines, and the odd scan lines and the even scan lines are enabled alternately.
根据本发明的另一技术样态,提出一种平面显示器驱动方法。平面显示器包括基板、多条数据线、多个扫描线、源极驱动单元及栅极驱动单元。基板包括一画素阵列。多条数据线及多条扫描线电性连接至画素阵列,此些扫描线包括多个奇数条扫描线及多个偶数条扫描线。源极驱动单元电性连接至此些数据线。栅极驱动单元包括第一移位暂存器电路及第二移位暂存器电路,第一移位暂存器电路用以依序致能奇数条扫描线,第二移位暂存器电路用以依序致能偶数条扫描线。平面显示器驱动方法包括:首先于第一图框周期内,交错地致能奇数条扫描线与偶数条扫描线,其中奇数条扫描线先于偶数条扫描线依序被致能;之后,于第二图框周期内,交错地致能奇数条扫描线与偶数条扫描线,其中偶数条扫描线先于奇数条扫描线依序被致能。According to another technical aspect of the present invention, a flat panel display driving method is proposed. The flat panel display includes a substrate, a plurality of data lines, a plurality of scan lines, a source driving unit and a gate driving unit. The substrate includes a pixel array. A plurality of data lines and a plurality of scan lines are electrically connected to the pixel array, and the scan lines include a plurality of odd-numbered scan lines and a plurality of even-numbered scan lines. The source driving unit is electrically connected to the data lines. The gate drive unit includes a first shift register circuit and a second shift register circuit, the first shift register circuit is used to sequentially enable an odd number of scan lines, and the second shift register circuit It is used to enable even scan lines in sequence. The flat panel display driving method includes: firstly, in the first frame period, enabling the odd-numbered scanning lines and the even-numbered scanning lines alternately, wherein the odd-numbered scanning lines are sequentially enabled before the even-numbered scanning lines; In two frame periods, the odd-numbered scanning lines and the even-numbered scanning lines are enabled alternately, wherein the even-numbered scanning lines are sequentially enabled before the odd-numbered scanning lines.
根据本发明的又一技术样态,提出一种平面显示器,包括基板、多条数据线、多条扫描线、源极驱动单元以及栅极驱动单元。基板包括一画素阵列。多条数据线电性连接至画素阵列。多个扫描线,包括p群扫描线,电性连接至画素阵列,p为正整数。同一群扫描线内,至少部分的扫描线不相邻。源极驱动单元电性连接至此些数据线。栅极驱动单元包括p个移位暂存器电路,分别用以致能p群扫描线。于第一图框周期内,p群扫描线以第一群组顺序被致能,于第二图框周期内,p群扫描线以第二群组顺序被致能,第一群组顺序不同于第二群组顺序。According to yet another technical aspect of the present invention, a flat panel display is provided, including a substrate, a plurality of data lines, a plurality of scan lines, a source driving unit, and a gate driving unit. The substrate includes a pixel array. Multiple data lines are electrically connected to the pixel array. A plurality of scan lines, including p groups of scan lines, are electrically connected to the pixel array, and p is a positive integer. Within the same group of scan lines, at least some of the scan lines are not adjacent. The source driving unit is electrically connected to the data lines. The gate driving unit includes p shift register circuits for respectively enabling p groups of scan lines. In the first frame period, the scan lines of the p group are enabled in the order of the first group, and in the second frame period, the scan lines of the p group are enabled in the order of the second group, and the order of the first group is different in the second group order.
根据本发明的再一技术样态,提出一种平面显示器驱动方法。平面显示器包括基板、多条数据线、多个扫描线、源极驱动单元及栅极驱动单元。基板包括一画素阵列。多条数据线及多条扫描线电性连接至画素阵列,此些扫描线包括p群扫描线,同一群扫描线内,至少部分的扫描线不相邻,p为正整数。源极驱动单元电性连接至此些数据线。栅极驱动单元包括p个移位暂存器电路,分别用以致能p群扫描线。平面显示器驱动方法包括:首先于第一图框周期内,以第一群组顺序致能p群扫描线;之后,于第二图框周期内,以第二群组顺序致能p群扫描线,第二群组顺序不同于第一群组顺序。According to yet another technical aspect of the present invention, a flat panel display driving method is proposed. The flat panel display includes a substrate, a plurality of data lines, a plurality of scan lines, a source driving unit and a gate driving unit. The substrate includes a pixel array. A plurality of data lines and a plurality of scanning lines are electrically connected to the pixel array, and the scanning lines include p groups of scanning lines. Within the same group of scanning lines, at least some of the scanning lines are not adjacent, and p is a positive integer. The source driving unit is electrically connected to the data lines. The gate driving unit includes p shift register circuits for respectively enabling p groups of scan lines. The driving method of the flat panel display includes: firstly enabling the scanning lines of the p group in the order of the first group in the first frame period; and then enabling the scanning lines of the p group in the order of the second group in the second frame period , the second group order is different from the first group order.
根据本发明的另一技术样态,提出一种平面显示器,包括基板、多条数据线、多个扫描线、源极驱动单元以及栅极驱动单元。基板包括一画素阵列。多条数据线电性连接至画素阵列。多个扫描线电性连接至画素阵列,此些扫描线包括多个奇数条扫描线与多个偶数条扫描线。源极驱动单元电性连接至此些数据线。栅极驱动单元包括第一移位暂存器电路及第二移位暂存器电路。第一移位暂存器电路用以依据第一起始信号、第一时钟信号及第一延迟时钟信号依序致能奇数条扫描线,第二移位暂存器电路用以依据第二起始信号、第二时钟信号及第二延迟时钟信号依序致能偶数条扫描线。于第一图框周期内,第一起始信号、第一时钟信号及第一延迟时钟信号的相位分别领先于第二起始信号、第二时钟信号及第二延迟时钟信号的相位。于第二图框周期内,第二起始信号、第二时钟信号及第二延迟时钟信号的相位分别领先于第一起始信号、第一时钟信号及第一延迟时钟信号的相位。According to another technical aspect of the present invention, a flat panel display is provided, including a substrate, a plurality of data lines, a plurality of scan lines, a source driving unit, and a gate driving unit. The substrate includes a pixel array. Multiple data lines are electrically connected to the pixel array. A plurality of scan lines are electrically connected to the pixel array, and the scan lines include a plurality of odd scan lines and a plurality of even scan lines. The source driving unit is electrically connected to the data lines. The gate driving unit includes a first shift register circuit and a second shift register circuit. The first shift register circuit is used to sequentially enable odd-numbered scan lines according to the first start signal, the first clock signal and the first delayed clock signal, and the second shift register circuit is used to enable the odd-numbered scan lines according to the second start signal, the second clock signal and the second delayed clock signal sequentially enable even scan lines. During the first frame period, the phases of the first start signal, the first clock signal and the first delayed clock signal are respectively ahead of the phases of the second start signal, the second clock signal and the second delayed clock signal. In the second frame period, phases of the second start signal, the second clock signal and the second delayed clock signal are respectively ahead of those of the first start signal, the first clock signal and the first delayed clock signal.
为让本发明的上述内容能更明显易懂,下文特举较佳实施例,并配合所附图式,作详细说明如下:In order to make the above content of the present invention more obvious and understandable, the following preferred embodiments are specifically cited below, and in conjunction with the accompanying drawings, the detailed description is as follows:
【附图说明】【Description of drawings】
图1为某种传统液晶显示器的示意图。Figure 1 is a schematic diagram of a conventional liquid crystal display.
图2A为本发明液晶显示器第一实施例的示意图。FIG. 2A is a schematic diagram of the first embodiment of the liquid crystal display of the present invention.
图2B系根据本发明液晶显示器第一实施例绘示驱动移位暂存器的信号波形图。FIG. 2B is a waveform diagram of signals driving a shift register according to the first embodiment of the liquid crystal display of the present invention.
图2C系根据本发明液晶显示器第一实施例绘示驱动扫描线的信号波形图。FIG. 2C is a waveform diagram of signals driving scanning lines according to the first embodiment of the liquid crystal display of the present invention.
图2D系根据本发明液晶显示器第一实施例绘示驱动移位暂存器的另一信号波形图。2D is another signal waveform diagram for driving the shift register according to the first embodiment of the liquid crystal display of the present invention.
图2E系根据本发明液晶显示器第一实施例绘示驱动扫描线的另一信号波形图。2E is another signal waveform diagram for driving scan lines according to the first embodiment of the liquid crystal display of the present invention.
图3为本发明平面显示器第一实施例的驱动方法流程图。FIG. 3 is a flow chart of the driving method of the first embodiment of the flat panel display of the present invention.
图4A为本发明液晶显示器第二实施例的示意图。FIG. 4A is a schematic diagram of a second embodiment of the liquid crystal display of the present invention.
图4B系根据本发明液晶显示器第二实施例绘示驱动移位暂存器的信号波形图。FIG. 4B is a waveform diagram of signals driving a shift register according to the second embodiment of the liquid crystal display of the present invention.
图4C根据本发明液晶显示器第二实施例绘示驱动扫描线的信号波形图。FIG. 4C is a waveform diagram of signals driving scanning lines according to the second embodiment of the liquid crystal display of the present invention.
图4D系根据本发明液晶显示器第二实施例绘示驱动移位暂存器的另一信号波形图。4D is another signal waveform diagram for driving the shift register according to the second embodiment of the liquid crystal display of the present invention.
图4E根据本发明液晶显示器第二实施例绘示驱动扫描线的另一信号波形图。FIG. 4E is another signal waveform diagram for driving scan lines according to the second embodiment of the liquid crystal display of the present invention.
图5为本发明平面显示器第二实施例的驱动方法流程图。FIG. 5 is a flow chart of the driving method of the second embodiment of the flat panel display of the present invention.
【具体实施方式】【Detailed ways】
本发明提供一种平面显示器及其驱动方法,将平面显示器的多条扫描线分成不同的群组,然后于不同的图框周期内,利用栅极驱动单元内的多个移位暂存器电路,以多个不同的群组顺序分别依序致能相对应群组的扫描线。本发明各实施例的平面显示器以液晶显示器为例做说明,然并不限于此,其他种类的显示器亦可适用。The present invention provides a flat-panel display and its driving method. Multiple scanning lines of the flat-panel display are divided into different groups, and then in different frame periods, multiple shift register circuits in the gate drive unit are used , enabling the scan lines of the corresponding groups sequentially in a plurality of different group sequences. The flat panel display in each embodiment of the present invention is described by taking a liquid crystal display as an example, but it is not limited thereto, and other types of displays are also applicable.
第一实施例first embodiment
图2A为本发明液晶显示器第一实施例的示意图。如图2A所示,液晶显示器200包括基板(未绘示于图)、多条数据线S1~Sm、多条扫描线G1~G2n、源极驱动单元210以及栅极驱动单元220,m及n为正整数。基板例如为一玻璃基板,其包括画素阵列230。画素阵列230包括多个画素P(x,y),x及y为正整数,每一个画素包括一晶体管T。平面显示器200中,每一条数据线S1~Sm例如与每一列画素的相邻两个画素的两个晶体管电性连接。FIG. 2A is a schematic diagram of the first embodiment of the liquid crystal display of the present invention. As shown in FIG. 2A, the
多条数据线S1~Sm系电性连接至画素阵列230。多条扫描线G1~G2n系电性连接至画素阵列230,此些扫描线G1~G2n包括多个奇数条扫描线G1、G3、G5、…、G2n-1与多个偶数条扫描线G2、G4、G6、…、G2n。源极驱动单元210系电性连接至数据线S1~Sm。A plurality of data lines S1˜Sm are electrically connected to the
栅极驱动单元220可被配置于基板的上,亦可直接于基板上形成。栅极驱动单元220包括第一移位暂存器电路222及第二移位暂存器电路224,第一移位暂存器电路222系用以依据第一起始信号ST1、第一时钟信号CK1及第一延迟时钟信号XCK1依序致能奇数条扫描线G1、G3、G5、…、G2n-1,其中第一延迟时钟信号XCK1的相位较第一时钟信号CK1的相位延迟180度。第二移位暂存器电路224系用以依据第二起始信号ST2、第二时钟信号CK2及第二延迟时钟信号XCK2依序致能偶数条扫描线G2、G4、G6、…、G2n,其中第二延迟时钟信号XCK2的相位较第二时钟信号CK2的相位延迟180度。The
图2B是根据本发明液晶显示器第一实施例绘示驱动移位暂存器的信号波形图。于图2B中可知,藉由改变多个控制信号ST1/CK1/XCK1及ST2/CK2/XCK2的时序,可达成以不同的群组顺序分别依序致能相对应群组的扫描线的目的。例如于图2B中,于第一图框周期,控制信号ST1/CK1/XCK1的相位系分别领先于控制信号ST2/CK2/XCK2的相位;于第二图框周期,控制信号ST2/CK2/XCK2的相位系分别领先于控制信号ST1/CK1/XCK1的相位。如此一来,多个移位暂存器电路可以使用相同的电路,使得栅极驱动单元架构简化,降低成本。FIG. 2B is a waveform diagram of signals driving a shift register according to the first embodiment of the liquid crystal display of the present invention. It can be seen from FIG. 2B that by changing the timings of the multiple control signals ST1/CK1/XCK1 and ST2/CK2/XCK2, the purpose of sequentially enabling the corresponding groups of scan lines in different group orders can be achieved. For example, in FIG. 2B, in the first frame period, the phases of the control signals ST1/CK1/XCK1 are respectively ahead of the phases of the control signals ST2/CK2/XCK2; in the second frame period, the control signals ST2/CK2/XCK2 The phases of are respectively ahead of the phases of the control signals ST1/CK1/XCK1. In this way, multiple shift register circuits can use the same circuit, which simplifies the structure of the gate driving unit and reduces the cost.
图2C系根据本发明液晶显示器第一实施例绘示驱动扫描线的信号波形图。如图2C所示,于第一图框周期内,奇数条扫描线G1、G3、G5、…、G2n-1与偶数条扫描线G2、G4、G6、…、62n系交错地被致能,亦即扫描线G1、扫描线G2、扫描线G3、扫描线G4、…、扫描线G2n-1及扫描线G2n系依序被致能。FIG. 2C is a waveform diagram of signals driving scanning lines according to the first embodiment of the liquid crystal display of the present invention. As shown in FIG. 2C, in the first frame period, the odd scanning lines G1, G3, G5, . . . , G2n-1 and the even scanning lines G2, G4, G6, . That is, the scan line G1 , the scan line G2 , the scan line G3 , the scan line G4 , . . . , the scan line G2n−1 and the scan line G2n are enabled in sequence.
于第二图框周期内,扫描线G2、扫描线G1、扫描线G4、扫描线G3、…、扫描线G2n及扫描线G2n-1系依序被致能。由于奇数条扫描线G1、G3、G5、…、G2n-1与偶数条扫描线G2、G4、G6、…、G2n系于不同图框周期内依不同群组顺序被致能,故每一个画素的充电耦合程度趋于一致,整体的亮度变得较均匀,可以减少影像画面的痕迹(mura)现象。In the second frame period, the scan line G2 , the scan line G1 , the scan line G4 , the scan line G3 , . . . , the scan line G2n and the scan line G2n−1 are enabled in sequence. Since the odd scanning lines G1, G3, G5, ..., G2n-1 and the even scanning lines G2, G4, G6, ..., G2n are enabled in different group sequences in different frame periods, each pixel The charge coupling degree tends to be consistent, and the overall brightness becomes more uniform, which can reduce the trace (mura) phenomenon of the image screen.
兹以画素阵列230的第一列画素为例做说明。于第一图框周期,当扫描线G1被致能,画素P(1,1)、P(3,1)、P(5,1)、…、P(2m-1,1)被充电,此时画素P(2,1)、P(4,1)、P(6,1)、…、P(2m,1)的画素电压因为电容耦合效应的影响而改变。接着,扫描线G2被致能,画素P(2,1)、P(4,1)、P(6,1)、…、P(2m,1)被充电,画素P(2,1)、P(4,1)、P(6,1)、…、P(2m,1)的画素电压被更新而随即消除了扫描线G1被致能时的电容耦合效应的影响。然而,于扫描线G2被致能的时,画素P(1,1)、P(3,1)、P(5,1)、…、P(2m-1,1)的已接收的画素电压将因为电容耦合效应的影响而改变,并维持一个图框周期。The first row of pixels of the
于第二图框周期,当扫描线G2被致能,画素P(2,1)、P(4,1)、P(6,1)、…、P(2m,1)被充电,使得画素P(1,1)、P(3,1)、P(5,1)、…、P(2m-1,1)的画素电压因为电容耦合效应的影响而改变。接着,扫描线G1被致能,画素P(1,1)、P(3,1)、P(5,1)、…、P(2m-1,1)被充电,画素P(1,1)、P(3,1)、P(5,1)、…、P(2m-1,1)的画素电压被更新而随即消除了扫描线G2被致能时电容耦合效应的影响。然而,于扫描线G1被致能的同时,画素P(2,1)、P(4,1)、P(6,1)、…、P(2m,1)的画素电压因为电容耦合效应的影响而改变,并维持一个图框周期。In the second frame period, when the scan line G2 is enabled, the pixels P(2,1), P(4,1), P(6,1), ..., P(2m,1) are charged, so that the pixels The pixel voltages of P(1,1), P(3,1), P(5,1), . Next, the scan line G1 is enabled, the pixels P(1,1), P(3,1), P(5,1), ..., P(2m-1,1) are charged, and the pixels P(1,1 ), P(3,1), P(5,1), . However, when the scan line G1 is enabled, the pixel voltages of pixels P(2,1), P(4,1), P(6,1), . . . The effect changes, and maintains a frame cycle.
由上述可推知,奇数行画素P(1,1)、P(3,1)、P(5,1)、…、P(2m-1,1)于第一图框周期受到电容耦合效应的影响,而偶数行画素P(2,1)、P(4,1)、P(6,1)、…、P(2m,1)于第二图框周期受到电容耦合效应的影响。因此经过第一图框周期及第二图框周期后,第一列画素P(1,1)~P(2m,1)均会受到充电耦合效应的影响,且被影响的程度系大致上一致。同样地,其他列画素受到电容耦合效应的影响的程度亦均与第一列画素差不多。因此,使用者观看时,并不会察觉到有不同行之间电容耦合效应的影响不同而有亮度差异所导致的痕迹现象。It can be deduced from the above that the pixels P(1, 1), P(3, 1), P(5, 1), ..., P(2m-1, 1) in the odd-numbered rows are affected by the capacitive coupling effect in the first frame period , while the even-numbered pixels P(2,1), P(4,1), P(6,1), . . . , P(2m,1) are affected by the capacitive coupling effect during the second frame period. Therefore, after the first frame period and the second frame period, the first row of pixels P(1,1)~P(2m,1) will be affected by the charging coupling effect, and the degree of influence is roughly the same . Similarly, the other columns of pixels are affected by the capacitive coupling effect similarly to the first column of pixels. Therefore, when the user watches, he will not perceive the trace phenomenon caused by the difference in the capacitive coupling effect between different rows and the difference in brightness.
在传统液晶显示器100中,于扫描线G1被致能时,画素P(2,1)、P(4,1)、P(6,1)、…、P(2m,1)的画素电压因为电容耦合效应的影响而改变。于扫描线G2被致能时,画素P(2,1)、P(4,1)、P(6,1)、…、P(2m,1)的画素电压被更新而消除了电容耦合效应的影响,但画素P(1,1)、P(3,1)、P(5,1)、…、P(2m-1,1)的画素电压却因为电容耦合效应的影响而改变,并维持一个图框周期。于传统液晶显示器100中,仅有奇数行画素的被电容耦合效应影响的画素电压会维持整个图框周期,故仅有奇数行画素会有颜色偏移的现象,而导致液晶显示器100垂直方向上有痕迹现象产生。然而,在本实施例中,由于液晶显示器200的每一行画素的受充电耦合效应影响的程度大致上一致,故不会有垂直方向上的痕迹现象产生。In the conventional
此外,除了每相邻一个图框周期改变一次奇数条扫描线与偶数条扫描线的致能顺序外,亦可以每相邻两个图框周期才改变一次奇数条扫描线与偶数条扫描线的致能顺序,且并不限于此。In addition, in addition to changing the enabling sequence of the odd-numbered scanning lines and the even-numbered scanning lines every adjacent frame period, the enabling order of the odd-numbered scanning lines and the even-numbered scanning lines can also be changed every two adjacent frame periods. enabling order, but is not limited to this.
图2D系根据本发明液晶显示器第一实施例绘示驱动移位暂存器的另一信号波形图。控制信号ST1/CK1/XCK1及ST2/CK2/XCK2的波形实质上相同于图2B,但每两个图框周期才改变一次。2D is another signal waveform diagram for driving the shift register according to the first embodiment of the liquid crystal display of the present invention. The waveforms of the control signals ST1/CK1/XCK1 and ST2/CK2/XCK2 are substantially the same as those in FIG. 2B, but only change once every two frame periods.
图2E系根据本发明液晶显示器第一实施例绘示驱动扫描线的另一信号波形图。第一图框周期、第二图框周期、第三图框周期及第四图框周期系依序相邻排列。于第一图框周期,扫描线G1、扫描线G2、扫描线G3、扫描线G4、…、扫描线G2n-1及扫描线G2n系依序被致能。接着,于第二图框周期及第三图框周期,扫描线G2、扫描线G1、扫描线G4、扫描线G3、…、扫描线G2n及扫描线G2n-1系依序被致能。之后,于第四图框周期,扫描线G1、扫描线G2、扫描线G3、扫描线G4、…、扫描线G2n-1及扫描线G2n系依序被致能。2E is another signal waveform diagram for driving scan lines according to the first embodiment of the liquid crystal display of the present invention. The first frame period, the second frame period, the third frame period and the fourth frame period are arranged adjacently in sequence. In the first frame period, the scan line G1 , the scan line G2 , the scan line G3 , the scan line G4 , . . . , the scan line G2n−1 and the scan line G2n are enabled in sequence. Then, in the second frame period and the third frame period, the scan line G2 , the scan line G1 , the scan line G4 , the scan line G3 , . . . , the scan line G2n and the scan line G2n-1 are sequentially enabled. After that, in the fourth frame period, the scan line G1 , the scan line G2 , the scan line G3 , the scan line G4 , . . . , the scan line G2n−1 and the scan line G2n are enabled in sequence.
此外,如图2A所示,液晶显示器200系利用控制栅极驱动单元220所接收的起始信号(start pulse)、时钟信号(clock pulse)及延迟时钟信号,来达成以多个不同的群组顺序分别依序致能相对应群组的扫描线的目的,但亦可以利用其他的方法,本发明并不限于此。In addition, as shown in FIG. 2A , the
本发明亦揭露一种平面显示器驱动方法,此平面显示器包括一基板、多条数据线、多个扫描线、一源极驱动单元及一栅极驱动单元。基板例如为一玻璃基板,包括一画素阵列。画素阵列包括多个画素,每个画素包括一晶体管,每一条数据线系与每一列画素的相邻两个画素的两个晶体管电性连接。The invention also discloses a method for driving a flat panel display. The flat panel display includes a substrate, a plurality of data lines, a plurality of scanning lines, a source driving unit and a gate driving unit. The substrate is, for example, a glass substrate, including a pixel array. The pixel array includes a plurality of pixels, each pixel includes a transistor, and each data line is electrically connected to two transistors of two adjacent pixels in each row of pixels.
数据线及扫描线电性连接至画素阵列。扫描线包括多个奇数条扫描线及多个偶数条扫描线。源极驱动单元电性连接至数据线。栅极驱动单元可被配置于基板上或直接形成于基板上,该栅极驱动单元包括第一移位暂存器电路及第二移位暂存器电路,第一移位暂存器电路用以依序致能奇数条扫描线,第二移位暂存器电路用以依序致能偶数条扫描线。The data lines and the scan lines are electrically connected to the pixel array. The scan lines include a plurality of odd scan lines and a plurality of even scan lines. The source driving unit is electrically connected to the data line. The gate drive unit can be configured on the substrate or directly formed on the substrate. The gate drive unit includes a first shift register circuit and a second shift register circuit, and the first shift register circuit is used for To sequentially enable the odd scan lines, the second shift register circuit is used to sequentially enable the even scan lines.
图3为本发明平面显示器第一实施例的驱动方法流程图。首先,于步骤300中,于第一图框周期内,交错地致能多个奇数条扫描线与多个偶数条扫描线,其中奇数条扫描线系先于偶数条扫描线依序被致能。之后,于步骤310中,于第二图框周期内,交错地致能多个奇数条扫描线与多个偶数条扫描线,其中偶数条扫描线系先于奇数条扫描线依序被致能。FIG. 3 is a flow chart of the driving method of the first embodiment of the flat panel display of the present invention. First, in
关于上述平面显示器驱动方法,其操作原理已详述于液晶显示器200的相关说明中,故于此不再重述。Regarding the driving method of the flat panel display, its operating principle has been described in detail in the description of the
第二实施例second embodiment
图4A为本发明液晶显示器第二实施例的示意图。液晶显示器400包括基板(未绘示于图)、多条数据线S1~Sm、多条扫描线G1~G2n、源极驱动单元410以及栅极驱动单元420,m及n为正整数。基板例如为一玻璃基板,其包括画素阵列430。画素阵列430包括多个画素,每一个画素包括一晶体管(未绘示于图)。液晶显示器400中,每一条数据线S1~Sm例如与每一列画素的p个晶体管电性连接,p为正整数。FIG. 4A is a schematic diagram of a second embodiment of the liquid crystal display of the present invention. The
多条数据线S1~Sm系电性连接至画素阵列430。多条扫描线G1~G2n系电性连接至画素阵列430,此些扫描线G1~G2n包括p群扫描线,其中至少部份的扫描线系不相邻。源极驱动单元410系电性连接至数据线S1~Sm。栅极驱动单元420包括第一移位暂存器电路421~第p移位暂存器电路42p,分别用以致能p群扫描线。A plurality of data lines S1˜Sm are electrically connected to the pixel array 430 . A plurality of scan lines G1-G2n are electrically connected to the pixel array 430, and these scan lines G1-G2n include p groups of scan lines, wherein at least some of the scan lines are not adjacent. The
于第一图框周期内,p群扫描线系以第一群组顺序被致能。然后,于第一图框周期后的第二图框周期内,p群扫描线系以第二群组顺序被致能,第一群组顺序系不同于第二群组顺序。或者,于第二图框周期后的第三图框周期内,p群扫描线系以第三群组顺序被致能,第三群组顺序系不同于第一群组顺序及第二群组顺序。此外,亦可以每相邻多个图框周期才改变p群扫描线依序被致能的群组顺序。During the first frame period, p groups of scan lines are enabled in the first group order. Then, in the second frame period following the first frame period, the p groups of scan lines are enabled in a second group order, and the first group order is different from the second group order. Or, in the third frame period after the second frame period, the scan lines of p groups are enabled in the order of the third group, and the order of the third group is different from the order of the first group and the second group order. In addition, it is also possible to change the order of the groups in which the p groups of scan lines are enabled sequentially every multiple adjacent frame periods.
接下来系举p等于3为例做说明。请参照图4B及图4C,图4B系根据本发明液晶显示器第二实施例绘示驱动移位暂存器的信号波形图,图4C则根据本发明液晶显示器第二实施例绘示驱动扫描线的信号波形图。于第一图框周期内,三个移位暂存器电路系以第一群、第二群及第三群的顺序致能三群扫描线。然后,于第一图框周期后的第二图框周期内,三个移位暂存器电路系以第二群、第三群及第一群的顺序致能三群扫描线。于第二图框周期后的第三图框周期内,三个移位暂存器电路系以第三群、第一群及第二群的顺序致能三群扫描线。本实施例虽以p=3为例,但本发明不受此限,p亦可为其他正整数;此外,在一图框周期内的扫描线被致能的顺序也可任意调换,并不仅限于上述实施例所举的顺序。Next, take p equal to 3 as an example to illustrate. Please refer to FIG. 4B and FIG. 4C. FIG. 4B is a signal waveform diagram for driving the shift register according to the second embodiment of the liquid crystal display of the present invention, and FIG. 4C is a diagram for driving the scanning lines according to the second embodiment of the liquid crystal display of the present invention. signal waveform diagram. In the first frame period, the three shift register circuits enable three groups of scan lines in the order of the first group, the second group and the third group. Then, in the second frame period following the first frame period, the three shift register circuits enable three groups of scan lines in the order of the second group, the third group and the first group. In the third frame period following the second frame period, the three shift register circuits enable three groups of scan lines in the order of the third group, the first group and the second group. Although this embodiment takes p=3 as an example, the present invention is not limited thereto, and p can also be other positive integers; in addition, the order in which the scanning lines are enabled within a frame period can also be changed arbitrarily, not only It is limited to the order listed in the above-mentioned embodiments.
此外,亦可以每相邻两个图框周期才改变一次不同群扫描线的致能顺序,请参照图4D及图4E,图4D系根据本发明液晶显示器第二实施例绘示驱动移位暂存器的另一信号波形图,图4E则根据本发明液晶显示器第二实施例绘示驱动扫描线的另一信号波形图。于相邻的第一图框周期及第二图框周期内,三个移位暂存器电路系以第一群、第二群及第三群的顺序致能三群扫描线。然后,于第二图框周期后的相邻的第三图框周期及第四图框周期内,三个移位暂存器电路系以第二群、第三群及第一群的顺序致能三群扫描线。于第四图框周期后的相邻的第五图框周期及第六图框周期内,三个移位暂存器电路系以第三群、第一群及第二群的顺序致能三群扫描线。In addition, the enabling sequence of different groups of scanning lines can also be changed every two adjacent frame periods. Please refer to FIG. 4D and FIG. 4E. FIG. FIG. 4E shows another signal waveform diagram for driving scanning lines according to the second embodiment of the liquid crystal display of the present invention. In the adjacent first frame period and the second frame period, the three shift register circuits enable three groups of scan lines in the order of the first group, the second group and the third group. Then, in the adjacent third frame period and the fourth frame period after the second frame period, the three shift register circuits are aligned in the order of the second group, the third group and the first group Can scan three groups of lines. In the fifth frame period and the sixth frame period adjacent to the fourth frame period, the three shift register circuits enable the three shift register circuits in the order of the third group, the first group and the second group. Group scan lines.
液晶显示器400的详细运作原理系类似于液晶显示器200的相关说明,故于此不再重述。The detailed operation principle of the
本发明亦揭露另一种平面显示器驱动方法,此平面显示器包括一基板、多条数据线、多个扫描线、一源极驱动单元及一栅极驱动单元。基板包括一画素阵列。多条数据线及多条扫描线电性连接至画素阵列。此些扫描线包括p群扫描线,同一群扫描线内,至少部分的扫描线系不相邻,p为正整数。源极驱动单元电性连接至此些数据线。栅极驱动单元包括p个移位暂存器电路,分别用以致能p群扫描线。The invention also discloses another method for driving a flat panel display. The flat panel display includes a substrate, a plurality of data lines, a plurality of scanning lines, a source driving unit and a gate driving unit. The substrate includes a pixel array. Multiple data lines and multiple scan lines are electrically connected to the pixel array. These scan lines include p groups of scan lines, in the same group of scan lines, at least some of the scan lines are not adjacent, and p is a positive integer. The source driving unit is electrically connected to the data lines. The gate driving unit includes p shift register circuits for respectively enabling p groups of scan lines.
图5为本发明平面显示器第二实施例的驱动方法流程图。首先,于步骤500中,于第一图框周期内,以第一群组顺序致能p群扫描线。之后,于步骤520中,于第二图框周期内,以第二群组顺序致能p群扫描线,第二群组顺序系不同于第一群组顺序。FIG. 5 is a flow chart of the driving method of the second embodiment of the flat panel display of the present invention. First, in
上述平面显示器驱动方法的操作原理已叙述于液晶显示器400的相关说明,故于此不再重述。The operating principle of the above flat panel display driving method has been described in the description of the
此外,多个控制信号ST1/CK1/XCK1及ST2/CK2/XCK2的脉波致能的时间亦可以重迭(overlap),以使相邻扫描线的扫描信号的脉波会部分重迭。如此一来,画素阵列中的画素将有预充电的时间,以使各画素快速地显示所要的亮度,使得液晶显示器200或400可以具有更高的亮度。In addition, the enabling times of the pulses of the control signals ST1/CK1/XCK1 and ST2/CK2/XCK2 can also overlap, so that the pulses of the scanning signals of adjacent scanning lines partially overlap. In this way, the pixels in the pixel array will have a pre-charge time, so that each pixel can quickly display the desired brightness, so that the
本发明上述实施例所揭露的平面显示器及其驱动方法,实质上系依据平面显示器的画素阵列的充电电路架构,将平面显示器的多条扫描线分成不同的群组,并将栅极驱动单元内配置多个移位暂存器电路。如此一来,即可于不同的图框周期内,利用栅极驱动单元内的多个移位暂存器电路,以多个不同的群组顺序分别依序致能相对应群组的扫描线,使得每一个画素的充电耦合程度趋于一致,每个画素受到电容耦合效应的影响较传统作法平均,以有效地减少影像画面的痕迹现象。The flat-panel display and its driving method disclosed in the above-mentioned embodiments of the present invention are essentially based on the charging circuit structure of the pixel array of the flat-panel display, divide the scanning lines of the flat-panel display into different groups, and divide the scanning lines in the gate drive unit into different groups. Configure multiple shift register circuits. In this way, within different frame periods, multiple shift register circuits in the gate drive unit can be used to sequentially enable corresponding groups of scan lines in different group sequences. , so that the charging coupling degree of each pixel tends to be consistent, and each pixel is affected by the capacitive coupling effect more evenly than the traditional method, so as to effectively reduce the trace phenomenon of the image screen.
此外,多个移位暂存器电路亦可使用相同的电路,而只要改变控制多个移位暂存器电路的时钟信号及起始信号的时序,即可达到上述效果。因此,本发明具有电路硬体设计简单,控制信号单纯,以及可有效降低成本的优点。In addition, multiple shift register circuits can also use the same circuit, and the above effect can be achieved by changing the timing of the clock signal and the start signal controlling the multiple shift register circuits. Therefore, the present invention has the advantages of simple circuit hardware design, simple control signals, and effective cost reduction.
综上所述,虽然本发明已以较佳实施例揭露如上,然其并非用以限定本发明。任何具有本发明所属技术领域的通常知识者,在不脱离本发明的精神和范围内,当可作各种的更动与润饰。因此,本发明的保护范围当视后附的申请专利范围所界定者为准。To sum up, although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field of the present invention may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the scope of the appended patent application.
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CN1499824A (en) * | 2002-11-04 | 2004-05-26 | 李治福 | Method for raising quality of image on liquid crystal display device |
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