CN203882587U - Pixel drive circuit, array substrate and display device - Google Patents

Pixel drive circuit, array substrate and display device Download PDF

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Publication number
CN203882587U
CN203882587U CN201420317889.1U CN201420317889U CN203882587U CN 203882587 U CN203882587 U CN 203882587U CN 201420317889 U CN201420317889 U CN 201420317889U CN 203882587 U CN203882587 U CN 203882587U
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transistor
line
voltage
connected
storage capacitor
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CN201420317889.1U
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孙亮
王颖
孙拓
马占洁
张林涛
皇甫鲁江
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京东方科技集团股份有限公司
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Abstract

The utility model relates to the technical field of display and discloses a pixel drive circuit. The pixel drive circuit comprises a data line, a grid wire, a first power line, a second power line, a lighting element, a drive transistor, a storage capacitor, a reset unit, a data write-in unit, a compensation unit and a lighting control unit. The utility model further discloses an array substrate and a display device. The pixel drive circuit can compensate and eliminate display unevenness caused by a threshold voltage difference of the drive transistor.

Description

技术领域 FIELD

[0001] 本实用新型涉及显示技术领域,特别涉及一种像素驱动电路、阵列基板及显示装置。 [0001] The present invention relates to display technology, and more particularly, to a pixel driving circuit, the array substrate and a display device. 像素驱动电路、阵列基板及显示装置 Pixel driving circuit, the array substrate and a display device

背景技术 Background technique

[0002] 有机电致发光二极管(Organic Light-Emitting Diode,0LED)作为一种电流型发光器件已越来越多地被应用于高性能有源矩阵发光有机电致显示管中。 [0002] The organic light-emitting diode (Organic Light-Emitting Diode, 0LED) have been increasingly applied to a current-type light emitting device as a high-performance active matrix light emitting organic electroluminescent display tube. 传统的无源矩阵有机电致发光显示器件(Passive Matrix 0LED)随着显示尺寸的增大,需要更短的单个像素的驱动时间,因而需要增大瞬态电流,增加功耗。 Conventional passive matrix organic electroluminescent display device (Passive Matrix 0LED) increases as the display size, it requires a shorter time for a single pixel driving, thus requiring increased transient current, increasing power consumption. 同时大电流的应用会造成氧化铟锡金属氧化物线上压降过大,并使0LED工作电压过高,进而降低其效率。 While a large current application causes the metal oxide, indium tin oxide lines drop is excessive, and the operating voltage is too high 0LED, thereby reducing its efficiency. 而有源矩阵有机电致发光显示管(Active Matrix 0LED,AM0LED)通过开关晶体管逐行扫描输入0LED电流,可以很好地解决这些问题。 While the active matrix organic electroluminescent display tube (Active Matrix 0LED, AM0LED) input current through the switching transistor 0LED progressive scan, can solve these problems.

[0003] 在AM0LED的像素电路设计中,主要需要解决的问题是各AM0LED像素驱动单元所驱动的0LED器件亮度的非均匀性。 [0003] In the pixel circuit design AM0LED, the main problem to be solved is AM0LED each pixel drive unit driving device 0LED luminance non-uniformity.

[0004] 首先,AM0LED采用薄膜晶体管(Thin-Film Transistor, TFT)构建像素驱动单元为发光器件提供相应的驱动电流。 [0004] First, AM0LED a thin film transistor (Thin-Film Transistor, TFT) Construction of a pixel driving unit for the driving current corresponding to the light emitting device. 现有技术中,大多采用低温多晶硅薄膜晶体管或氧化物薄膜晶体管。 In the prior art, most of the low-temperature polysilicon thin film transistor or an oxide thin film transistor. 与一般的非晶硅薄膜晶体管相比,低温多晶硅薄膜晶体管和氧化物薄膜晶体管具有更高的迁移率和更稳定的特性,更适合应用于AM0LED显示中。 Compared with general amorphous silicon thin film transistor, a low temperature polysilicon thin film transistor and an oxide thin film transistor having higher mobility characteristics and a more stable, more suitable for AM0LED display. 但是由于晶化工艺的局限性,在大面积玻璃基板上制作的低温多晶硅薄膜晶体管,常常在诸如阈值电压、迁移率等电学参数上具有非均匀性,这种非均匀性会转化为0LED器件的驱动电流差异和亮度差异,并被人眼所感知,即色不均现象。 However, due to the limitations of the crystallization process, a low temperature polysilicon thin film transistor fabricated on a large area glass substrate, usually has a non-uniformity in electrical parameters such as threshold voltage, mobility, etc., this will be converted to non-uniformity of the device 0LED drive current differences and difference in brightness, and is perceived by the human eye, i.e., the color inequality. 氧化物薄膜晶体管虽然工艺的均匀性较好,但是与非晶硅薄膜晶体管类似,在长时间加压和高温下,其阈值电压会出现漂移,由于显示画面不同,面板各部分薄膜晶体管的阈值漂移量不同,会造成显示亮度差异,由于这种差异与之前显示的图像有关,因此常呈现为残影现象。 While the oxide thin film transistor process uniformity is better, but the amorphous silicon thin film transistor and the like, under high temperature and pressure for a long time, the threshold voltage shift occurs, due to different screens, the panel portions of the threshold shift of thin film transistors different amounts, can cause differences in the brightness of the display, as the image related to this difference with previous shows, so often presented as image retention.

[0005] 由于0LED的发光器件是电流驱动器件,因此,在驱动发光器件发光的像素驱动单元中,其驱动晶体管的阈值特性对驱动电流和最终显示的亮度影响很大。 [0005] Since the light emitting device is 0LED current drive device, therefore, the pixel driving unit drives the light emitting device to emit light, the threshold characteristics of the driving transistor which greatly influence the driving current and the brightness of the resulting display. 驱动晶体管受到电压应力和光照都会使其阈值发生漂移,这种阀值漂移会在显示效果上体现为亮度不均。 Voltage stress by the drive transistor and the light will have its threshold drifts, this will be reflected in the threshold drift in uneven brightness on the display.

[0006] 另外,现有AM0LED的像素电路为了消除驱动晶体管阈值电压差所造成的影响,通常会将像素电路的结构设计的比较复杂,这会直接导致AM0LED的像素电路制作良品率的降低。 [0006] Further, the influence of the pixel circuits in order to eliminate the conventional AM0LED drive transistor threshold value of the voltage difference caused by the structural design of the pixel circuit will usually more complicated, which will directly lead to reduction of the production yield AM0LED pixel circuit.

[0007] 因此,为解决上述问题,本实用新型急需提供一种像素驱动单元及其驱动方法、像素电路。 [0007] Thus, to solve the above problems, the present invention is an urgent need to provide a driving unit and a driving method for the pixel, the pixel circuit. 实用新型内容 SUMMARY

[0008] (一)要解决的技术问题 [0008] (a) To solve technical problems

[0009] 本实用新型要解决的技术问题是:如何实现一种具有补偿和消除驱动晶体管阈值电压差所造成的显示不均的能力的AMOLED像素驱动电路。 [0009] The present invention Problem to be solved: how to realize a pixel AMOLED display unevenness compensation and elimination threshold value of the voltage difference caused by the driving transistor drive circuit having a capability.

[0010](二)技术方案 [0010] (ii) Technical Solution

[0011] 为解决上述技术问题,本实用新型提供了一种像素驱动电路,包括:数据线、栅线、 第一电源线、第二电源线、发光器件、驱动晶体管、存储电容、复位单元、数据写入单元,补偿单元及发光控制单元;所述数据线用于提供数据电压; [0011] In order to solve the above problems, the present invention provides a pixel driving circuit comprising: a data line, a gate line, a first power source line, second power supply line, a light emitting device, a driving transistor, a storage capacitor, a resetting means, a data writing unit, a control unit and a light emitting compensation unit; a data line for supplying a data voltage;

[0012] 所述栅线用于提供扫描电压; [0012] The gate line for supplying a scanning voltage;

[0013] 所述第一电源线用于提供第一电源电压,所述第二电源线用于提供第二电源电压; [0013] The first power source line for supplying a first power source voltage, the second power supply line for supplying a second power source voltage;

[0014] 所述复位单元用于复位所述存储电容两端的电压为预定电压; [0014] The reset unit for resetting the voltage across the storage capacitor to a predetermined voltage;

[0015] 所述数据写入单元连接栅线、数据线及所述存储电容的第二端,用于向所述存储电容的第二端写入包括数据电压的信息, [0015] The data writing unit connected to the gate line, data line and a second terminal of the storage capacitor, a voltage for writing information including data to a second terminal of the storage capacitor,

[0016] 所述补偿单元连接栅线、存储电容的第一端和驱动晶体管,用于向存储电容的第一端写入包括驱动晶体管阈值电压的信息以及第一电源电压的信息; [0016] The compensation unit connected to gate line, a first terminal of the storage capacitor and a drive transistor for writing information to the storage capacitor comprising a first terminal of the drive transistor threshold voltage value information and the first power supply voltage;

[0017] 所述发光控制单元连接所述存储电容、驱动晶体管和所述发光器件,用于控制所述驱动晶体管驱动发光器件发光; [0017] The light emission control unit is connected to the storage capacitor, the driving transistor and the light emitting device, for controlling the driving transistor drives the light emitting device to emit light;

[0018] 所述存储电容的第一端连接驱动晶体管的栅极,用于将包括数据电压的信息转写至驱动晶体管的栅极; [0018] The first storage capacitor connected to the gate terminal of the drive transistor, including information data for transfer to the gate voltage of the driving transistor;

[0019] 所述驱动晶体管连接第一电源线,所述发光器件连接第二电源线,所述驱动晶体管用于在发光控制单元的控制下根据包括所述数据电压、驱动晶体管阈值电压以及第一电源电压的信息控制流向发光器件的电流大小。 [0019] The driving transistor connected to the first power source line, the light emitting device connected to the second power source line, a transistor for driving the light emission under the control of the control unit according to the data voltage comprises a driving transistor and a threshold voltage of a first information controlling the current flowing to the power supply voltage of the light emitting device size.

[0020] 其中,所述复位单元包括:复位控制线、复位信号线、第一晶体管和第二晶体管,所述第一晶体管的栅极连接所述复位控制线、源极连接所述复位信号线、漏极连接所述存储电容的第一端,所述第一晶体管用于将复位信号线电压写入所述存储电容的第一端;所述第二晶体管的栅极连接所述复位控制线、源极连接所述数据线、漏极连接所述存储电容的第二端,所述第二晶体管用于将数据电压写入所述存储电容的第二端。 [0020] wherein said reset means comprises: a reset control line, the reset signal line, a first transistor and a second transistor, a gate of the first transistor is connected to the reset control line, a source connected to the reset signal line , a drain connected to the first terminal of the storage capacitor, a first transistor of the reset signal line for voltage writing a first terminal of the storage capacitor; a gate of the second transistor is connected to the reset control line a source connected to the data line, a drain connected to the second terminal of the storage capacitor, a second terminal of the second transistor for writing a data voltage of the storage capacitor.

[0021] 其中,所述第一晶体管和第二晶体管均为P型晶体管。 [0021] wherein said first and second transistors are P-type transistors.

[0022] 其中,所述数据写入单元包括:第四晶体管;所述第四晶体管的栅极连接所述栅线、源极连接所述数据线、漏极连接所述存储电容的第二端,所述第四晶体管用于将数据电压写入存储电容的第二端。 [0022] wherein said data writing means includes: a fourth transistor; the gate line connected to a gate of the fourth transistor, a source connected to the data line, a drain connected to the second terminal of the storage capacitor , a second terminal of the fourth transistor for writing data to the storage capacitor voltage.

[0023] 其中,所述第四晶体管为P型晶体管。 [0023] wherein said fourth transistor is a P-type transistor.

[0024] 其中,所述补偿单元包括:第三晶体管;所述第三晶体管的栅极连接所述栅线、源极连接所述存储电容的第一端、漏极连接所述驱动晶体管的漏极,所述第三晶体管用于将包括驱动晶体管的阈值电压信息以及第一电源电压的信息写入所述存储电容的第一端。 [0024] wherein the compensation unit comprises: a third transistor; the gate line connected to a gate of the third transistor, a source connected to a first terminal of the storage capacitor, a drain connected to the drain of the driving transistor electrode, the third transistor configured to include a threshold voltage information of the driving transistor and the first end of the first power supply voltage information written in the storage capacitor.

[0025] 其中,所述第三晶体管为P型晶体管。 [0025] wherein said third transistor is a P-type transistor.

[0026] 其中,还包括补偿信号线,所述发光控制单元包括:发光控制线、第五晶体管和第六晶体管;所述第五晶体管的栅极连接所述发光控制线、源极连接所述补偿信号线、漏极连接所述存储电容的第二端,所述第五晶体管用于将补偿信号线电压写入存储电容的第二端,并由存储电容转写至驱动晶体管栅极;所述第六晶体管的栅极连接所述发光控制线、源极连接所述发光器件的第一端、漏极连接所述驱动晶体管的漏极,所述第六晶体管用于控制发光器件发光,所述驱动晶体管用于在发光控制单元的控制下根据包括所述数据电压、 驱动晶体管阈值电压、第一电源电压和补偿信号线电压的信息控制流向发光器件的电流大小。 [0026] wherein the compensation signal further comprises a line, the emission control unit comprises: a light emitting control line, the fifth and sixth transistors; gate connected to the emission control line of the fifth transistor, a source connected to the the second end of the compensation signal line, a drain connected to the storage capacitor, a second terminal of the fifth transistor for compensating the line voltage signal into the storage capacitor, the storage capacitor by the transfer to the drive transistor gate; the a first terminal, a drain connected to the drain of the driving transistor to the light emitting control line connected to the gate of said sixth transistor, a source connected to the light emitting device, the sixth transistor for controlling the light emitting device to emit light, the said drive transistor under control of the light emission control unit comprises according to the data voltage, a threshold voltage of the driving transistor, the compensation information of the first supply voltage and the control signal line voltage magnitude of the current flowing to the light emitting device.

[0027] 其中,所述发光控制单元包括:发光控制线、第五晶体管和第六晶体管;所述第五晶体管的栅极连接所述发光控制线、源极连接所述第一电源线、漏极连接所述存储电容的第二端,所述第五晶体管用于将所述第一电源电压写入存储电容的第二端,并由存储电容转写至驱动晶体管栅极;所述第六晶体管的栅极连接所述发光控制线、源极连接所述发光器件的第一端、漏极连接所述驱动晶体管的漏极,所述第六晶体管用于控制发光器件发光, 所述驱动晶体管用于在发光控制单元的控制下根据包括所述数据电压、驱动晶体管阈值电压、第一电源电压的信息控制流向发光器件的电流大小。 [0027] wherein said light emission control means comprises: light emission control line, the fifth and sixth transistors; gate connected to the emission control line of the fifth transistor, a source connected to said first power source line, a drain a second end connected to the storage capacitor, the fifth transistor configured to supply the first voltage written to the second terminal of the storage capacitor, the storage capacitor by the transfer to the drive transistor gate; the sixth emission control line connected to the gate of the transistor, a source connected to a first end of the light emitting device, a drain connected to the drain of the driving transistor, the sixth transistor for controlling emission light emitting device, the driving transistor under control of the light emission control unit comprises according to the data voltage, a threshold voltage of the driving transistor, the control information of the first power supply voltage magnitude of the current flowing to the light emitting device.

[0028] 其中,所述第五晶体管和第六晶体管均为P型晶体管。 [0028] wherein said fifth and sixth transistors are P-type transistors.

[0029] 其中,所述驱动晶体管均为P型晶体管。 [0029] wherein the driving transistor are P-type transistors.

[0030] 本发明还提供了一种阵列基板,包括上述任一项所述的像素驱动电路。 [0030] The present invention further provides an array substrate comprising a pixel driving circuit according to any of the above.

[0031] 本发明还提供了一种显示装置,包括上述的阵列基板。 [0031] The present invention further provides a display apparatus including the above array substrate.

[0032] (三)有益效果 [0032] (c) beneficial effect

[0033] 本实用新型的像素驱动单元,通过驱动晶体管的栅极和漏极相连的结构(当栅极控制信号开启时,驱动晶体管的栅极与漏极通过第三开关晶体管相连),使所述驱动晶体管的漏极将所述第一电源电压连同所述驱动晶体管的阈值电压一起加载至存储电容第一端, 并以此抵消驱动晶体管的阈值电压;可以在对发光器件进行驱动的过程中,有效地消除驱动晶体管由自身阈值电压所造成的非均匀性和因阈值电压漂移造成的残影现象;避免了有源矩阵发光有机电致显示管中不同像素驱动单元的发光器件之间因其驱动晶体管的阈值电压不同而造成的有源矩阵发光有机电致显示管亮度不均的问题;提高了像素驱动单元对发光器件的驱动效果,进一步提高了有源矩阵发光有机电致显示管的品质。 [0033] the present invention a pixel driving unit, and through the gate structure (gate control signal when turned on, the gate and drain of the driving transistor is connected via a third switching transistor) is connected to the drain of the driving transistor, so that the said drain of the driving transistor of the first power source voltage together with the threshold voltage of the driving transistor to the storage capacitor is loaded with a first end, and to offset the threshold voltage of the driving transistor; can process the light emitting device is driven in avoided because the active matrix light emitting organic electroluminescent device display tube between different pixel driving unit; effectively eliminate non-uniformity of the driving transistor and the image sticking due to the threshold voltage shift caused by their threshold voltage caused by different threshold voltage of the driving transistor caused by the active matrix light emitting organic electroluminescent display has uneven brightness problem tube; improving effect of driving the pixel of the light emitting device driving unit, to further improve the quality of active matrix organic electroluminescent display has a light emitting tube .

附图说明 BRIEF DESCRIPTION

[0034] 图1是本实用新型实施例的一种像素驱动电路图; [0034] FIG. 1 is an embodiment of the present invention a pixel drive circuit diagram of the embodiment;

[0035] 图2是图1中像素驱动电路的时序图; [0035] FIG. 2 is a timing chart in FIG. 1 the pixel driving circuit;

[0036] 图3是本实用新型实施例的另一种像素驱动电路图; [0036] FIG. 3 is an embodiment of the present invention, a drive circuit diagram of another pixel;

[0037] 图4是图3中像素驱动电路的时序图。 [0037] FIG. 3 FIG. 4 is a timing chart of the pixel driving circuit.

具体实施方式 Detailed ways

[0038] 下面结合附图和实施例,对本实用新型的具体实施方式作进一步详细描述。 [0038] accompanying drawings and the following embodiments, the present invention specific embodiments described in further detail. 以下实施例用于说明本实用新型,但不用来限制本实用新型的范围。 The following examples serve to illustrate the present invention but are not intended to limit the scope of the invention.

[0039] 需要说明的是,本实用新型实施例中所定义的各晶体管的栅极为控制晶体管打开的一端,源极和漏极是晶体管除栅极以外的两端,此处源极和漏极只是为了方便说明晶体管的连接关系,并不是对电流走向所做的限定,本领域技术人员可以根据晶体管的类型、信号连接方式等内容清楚的知道其工作的原理和状态。 [0039] Incidentally, the gate of each transistor of the embodiment of the present invention as defined in the end of the control transistor is turned on, the source and drain of the transistor other than the two ends of the gate, source and drain where for convenience only the connection relationship of the transistor, current is not made to define, the skilled person can know the operating status and the principle according to the content type of the transistors, signal connections and the like.

[0040] 实施例1 [0040] Example 1

[0041] 如图1所示,本实用新型的像素驱动电路,包括:数据线Data、栅线Gate、第一电源线ELVDD、第二电源线ELVSS、发光器件D1、驱动晶体管T7、存储电容Cl、复位单元、数据写入单元、补偿单元及发光控制单元。 [0041] 1, according to the present invention the pixel driving circuit, comprising: a data line Data, the gate line Gate, the first power source line source ELVDD, the second power source ELVSS line, the light emitting device D1, a driving transistor T7, storage capacitor Cl , a reset unit, a data writing unit, a control unit and a light emitting compensation element. 其中发光器件D1可以为有机发光二极管;数据线Data 用于提供数据电压;所述栅线Gate用于提供扫描电压;所述第一电源线ELVDD用于提供第一电源电压,所述第二电源线ELVSS用于提供第二电源电压。 Wherein the light emitting device may be an organic light emitting diode D1; data line Data for providing data voltage; the gate line Gate for supplying a scan voltage; said first power source line for supplying a first power source voltage ELVDD, the second power supply line for supplying a second power source voltage ELVSS.

[0042] 复位单元用于复位存储电容C1两端的电压为预定电压。 [0042] reset means for resetting the voltage across the storage capacitor C1 to a predetermined voltage.

[0043] 数据写入单元连接栅线Gate、数据线Data及存储电容C1的第一端(N1点),用于向存储电容C1的第二端(N2点)写入包括数据电压的信息。 [0043] The data writing unit is connected to the gate line Gate, a first terminal (N1 dot) and the data line Data to the storage capacitor C1, a voltage for writing data comprising information to the second terminal (N2 dot) of the storage capacitor C1.

[0044] 所述补偿单元连接栅线Gate、存储电容C1的第一端和驱动晶体管T7,用于向存储电容C1的第一端写入包括驱动晶体管阈值电压的信息以及第一电源电压的信息。 [0044] The compensation unit connected to the gate line Gate, the storage capacitor C1 and a first terminal of the driving transistor T7, for writing information includes a threshold value voltage of the driving transistor and the first power supply voltage information to the first terminal of the storage capacitor C1 .

[0045] 发光控制单元连接存储电容C1、驱动晶体管T7和发光器件D1,用于控制驱动晶体管T7驱动发光器件发光。 [0045] The light emission control unit connected to the storage capacitor C1, the driving transistor T7 and the light emitting device D1, for controlling the drive transistor T7 driving device emits light. 驱动晶体管T7连接第一电源线ELVDD,发光器件D1连接第二电源线ELVSS,所述驱动晶体管T7用于在发光控制单元的控制下根据数据电压控制流向发光器件D1的电流大小。 A first driving transistor T7 connected to the power supply line ELVDD, the light emitting device D1 is connected between the second power line ELVSS, the driving transistor T7 under the control of a light emission control unit controls the magnitude of the current flowing to the light emitting device according to the data voltages D1.

[0046] 存储电容C1的第一端连接驱动晶体管T7的栅极,用于将包括数据电压的信息转写至驱动晶体管T7的栅极。 [0046] The first terminal of the storage capacitor C1 is connected to the gate of the driving transistor T7, to information including the data voltage to the transfer gate of the drive transistor T7.

[0047] 驱动晶体管T7连接第一电源线,所述发光器件D1连接第二电源线ELVSS。 [0047] The driving transistor T7 is connected to the first power source line, the light emitting device D1 is connected to the second power line ELVSS. 驱动晶体管T7用于在发光控制单元的控制下根据包括所述数据电压、驱动晶体管阈值电压以及第一电源电压的信息控制流向发光器件的电流大小。 The driving transistor T7 under control of the light emission control unit according to the data voltage comprises, driving information and the threshold voltage of the transistor of the first power supply voltage controlling the magnitude of the current flowing to the light emitting device.

[0048] 本实施例的驱动电路中,通过补偿单元提取驱动晶体管的阈值电压,在对发光器件进行驱动的过程中能够与驱动晶体管T7的阈值电压进行抵销,从而可以有效地消除驱动晶体管由自身阈值电压所造成的非均匀性和因阈值电压漂移造成的残影现象,避免了有源矩阵有机电致发光显示器件中不同像素因其驱动晶体管的阈值电压不同而造成的显示亮度不均的问题。 [0048] The driving circuit of the present embodiment, the extraction by the compensation cell threshold voltage of the driving transistor, in the process of the light emitting device be driven capable of the threshold voltage of the transistor T7 will be offset, thereby effectively eliminate the driving transistor by the and non-uniformity due to the afterimage phenomenon due to the threshold voltage shift caused by the threshold voltage of itself, to avoid active matrix organic electroluminescent display luminance unevenness in the light emitting display device because different pixel threshold voltage of the driving transistor caused by the different problem.

[0049] 本实施例中,复位单元包括:复位控制线Reset、复位信号线int、第一晶体管T1和第二晶体管T2。 [0049] In this embodiment, the reset unit comprises: the Reset a reset control line, the reset signal line int, the first transistor T1 and second transistor T2. 第一晶体管T1的栅极连接复位控制线Reset、源极连接复位信号线int、漏极连接存储电容C1的第一端,第一晶体管T1用于将复位信号线int的电压V int写入存储电容C1的第一端。 The first transistor T1 is connected to the gate of the Reset a reset control line, a source connected int reset signal line, a drain connected to a first terminal of the storage capacitor C1, a first transistor T1 for the reset signal line voltage V int int written to the memory a first terminal of the capacitor C1. 第二晶体管T2的栅极连接复位控制线Reset、源极连接数据线Data、漏极连接存储电容C1的第二端,第二晶体管T2用于将数据线Data的电压V data写入存储电容C1的第二端。 A second gate of the transistor T2 is connected to the Reset a reset control line, a source connected to the data line Data, the drain connected to the second terminal of the storage capacitor C1, a second transistor T2 for the data voltage V data line Data is written into the storage capacitor C1 the second end. 即复位C1两端的电压分别为。 The voltage across C1 is reset respectively. 复位后,存储电容C1的第二端(N2 点)为数据电位,不会被拉低至一个较低的电位,在该电路的数据电压写入阶段时,由于N2 点电位已经被写入为数据电位,因此在这一阶段N2点电位不会发生跳变,这样就避免了N2 点电位的跳动,从而避免了N1点电位随N2点电位不同而不同的问题。 After the reset, the second end (node ​​N2) of the storage capacitor C1, the potential of the data, is not pulled down to a low potential, when the data voltage writing phase of the circuit, since the potential of node N2 has been written as data potential, so at this stage N2 point potential transition does not occur, thus avoiding the beating N2 point potential, so as to avoid potential point N1 N2 points with different potentials and different problems.

[0050] 数据写入单元包括:第四晶体管T4。 [0050] The data write unit comprises: a fourth transistor T4. 第四晶体管T4的栅极连接栅线Gate、源极连接数据线Data、漏极连接存储电容C1的第二端,第四晶体管T4用于将数据电压V data写入存储电容的第二端,即使N2点的电压为Vdata。 The fourth transistor T4 is connected to the gate line Gate gate, a source connected to the data line Data, the drain connected to a second terminal of the storage capacitor C1, a second terminal of the fourth transistor T4 to write the data voltage V data storage capacitor, even if the voltage of the node N2 is Vdata.

[0051] 第三晶体管T3的栅极连接栅线Gate、源极连接存储电容Cl的第一端、漏极连接驱动晶体管T7的漏极,第三晶体管T3用于将包括第一电源电压V dd和驱动晶体管T7的阈值电压Vth的信息写入存储电容C1的第一端,即此时N1点的电压为V dd - Vth。 [0051] The gate of the third transistor T3 is connected to the gate line Gate, a source connected to a first terminal of the storage capacitor Cl, a drain connected to the drain of the driving transistor T7, T3 for the third transistor comprising a first power source voltage V dd a first end and information of the driving transistor T7 is the threshold voltage Vth is written into the storage capacitor C1, i.e. the voltage of the node N1 at this time is V dd - Vth.

[0052] 发光控制单元包括:发光控制线EM、第五晶体管T5和第六晶体管T6。 [0052] The light emission control means comprises: light emission control line EM, the fifth transistor T5 and sixth transistor T6. 第五晶体管T5的栅极连接发光控制线EM、源极连接第一电源线ELVDD、漏极连接存储电容Cl的第二端,第五晶体管T5用于将第一电源电压写入存储电容的第二端,并由存储电容转写至驱动晶体管T7的栅极。 A fifth gate of the transistor T5 is connected to the EM emission control line, a source connected to a first power source line source ELVDD, a drain connected to a second terminal of the storage capacitor Cl, a fifth transistor T5 a first power source voltage for writing the first storage capacitor ends, by the storage capacitor to the transfer gate of the drive transistor T7. 第六晶体管T6的栅极连接发光控制线EM、源极连接发光器件D1的第一端、漏极连接驱动晶体管T7的漏极,第六晶体管T6用于控制发光器件D1发光,即T6开启时驱动晶体管T7才能驱动电流流向发光器件D1。 The sixth gate of the transistor T6 is connected to the EM emission control line, a source connected to a first end of the light emitting device D1, a drain connected to the drain of the driving transistor T7, the sixth transistor T6 emission control for the light emitting device D1, i.e., when the opening T6 the driving transistor T7 to the driving current to the light emitting device D1. 所述驱动晶体管用于在发光控制单元的控制下根据包括所述数据电压、驱动晶体管阈值电压、第一电源电压的信息控制流向发光器件的电流大小。 The drive transistor under control of the light emission control unit comprises according to the data voltage, a threshold voltage of the driving transistor, the control information of the first power supply voltage magnitude of the current flowing to the light emitting device.

[0053] 本实用新型的像素驱动单元,通过驱动晶体管T7的栅极和漏极相连的结构(当栅极控制信号开启时,驱动晶体管T7的栅极与漏极通过第三开关晶体管T3相连),在对发光器件进行驱动的过程中能够与驱动晶体管T7的阈值电压进行抵销,从而可以有效地消除驱动晶体管由自身阈值电压所造成的非均匀性和因阈值电压漂移造成的残影现象;避免了有源矩阵发光有机电致显示管中不同像素驱动单元的发光器件之间因其驱动晶体管的阈值电压不同而造成的有源矩阵发光有机发光器件管显示亮度不均的问题;提高了像素驱动单元对发光器件的驱动效果,进一步提高了有源矩阵发光有机电致显示管的品质。 [0053] The present invention pixel drive unit, through the gate and the drain of the transistor T7 is connected to the structure (when the gate control signal is turned on, the drain and gate of the drive transistor T7 is connected via a third switching transistor T3) can be made to offset the threshold voltage of the driving transistor T7 is in the process of the light emitting device is driven, thereby effectively eliminate the driver transistor non-uniformity and image sticking due to the threshold voltage shift caused by their threshold voltage caused; avoiding the active matrix light emitting organic electroluminescent display device between the light emitting tube in different pixel driving unit depending on its threshold voltage of the driving transistor caused by the active matrix light emitting device the organic light emitting display tube the problem of uneven brightness; improved pixel driving means for driving the effect light emitting device, further improving the quality of active matrix organic electroluminescent display has a light emitting tube.

[0054] 如图2所示,本实施例的电路结构工作时包括三个阶段: [0054] 2, the circuit structure including three phases of the working examples of the present embodiment:

[0055] 第一阶段tl :复位控制线Reset信号有效,Tl,T2打开,对存储电容C1两端进行复位。 [0055] The first stage tl: Reset a reset control line signal active, Tl, T2 is opened, both ends of the storage capacitor C1 is reset. 此时,N1点写入复位信号线int的电压V int,N2点为数据电压Vdata。 At this time, N1-point write voltage V int int the reset signal line, N2 point of the data voltage Vdata.

[0056] 第二阶段t2 :栅线信号有效,使得T3、T4打开,N2点写入Vdata,Nl点写入Vdd -Vth, 此时存储电容Cl存储的电压为Vdd - Vth - Vdata。 [0056] The second stage t2: gate line signal is active, so that T3, T4 is opened, N2 where writing Vdata, Nl where writing Vdd -Vth, where the voltage stored in storage capacitor Cl is Vdd - Vth - Vdata. 本阶段T3将包括第一电源电压信息和驱动晶体管的阈值电压的信息写入所述存储电容C1的第一端。 This stage T3 information including the threshold voltage of the first power supply voltage information and the driving transistor into the first terminal of the storage capacitor C1.

[0057] 第三阶段t3 :发光控制线ΕΜ的信号有效,Τ5、Τ6打开,Ν2点电位为Vdd,Ν1点电位为Vdd - Vth - Vdata+Vdd,这也就是驱动晶体管的栅极电位,驱动晶体管的源极电位为Vdd,栅源电压Vgs 为Vdd - Vth - Vdata+Vdd - Vdd,流向发光器件的电流为I = 1/2μ CM(W/L) (Vgs - Vth)2 = 1/2μ CM(W/L) (Vdd - Vdata)2。 [0057] The third stage t3: ΕΜ emission control line signal active, Τ5, Τ6 open, v2 point potential Vdd, Ν1 point potential Vdd - Vth - Vdata + Vdd, which is the gate potential of the driving transistor, the driving the source potential of the transistor to Vdd, the gate-source voltage Vgs is Vdd - Vth - Vdata + Vdd - Vdd, the current flowing to the light emitting device is I = 1 / 2μ CM (W / L) (Vgs - Vth) 2 = 1 / 2μ CM (W / L) (Vdd - Vdata) 2. 其中,μ为载流子迁移率,CM为栅氧化层电容,W/L为驱动晶体管的宽长比。 Wherein, μ is the carrier mobility, CM is the gate oxide capacitance, W / L of the driving transistor width to length ratio.

[0058] 由上述流向发光器件的电流的公式可看出,该电流I已经与驱动晶体管T7的阈值电压v th无关,因此避免了有源矩阵有机电致发光显示器件中不同像素因其驱动晶体管的阈值电压不同而造成的显示亮度不均的问题。 [0058] As can be seen from the formula the current flowing to the light emitting device, the drive current I and has a threshold voltage v th transistor T7 is independent, thus avoiding an active matrix organic electroluminescent display device because different pixel drive transistor display luminance unevenness problems of different threshold voltages caused.

[0059] 实施例2 [0059] Example 2

[0060] 实施例1中,T5连接第一电源线ELVDD,第一电源线ELVDD上电流电阻压降(IR drop)导致电压V dd变化,因此,T5在对C1的第二端(N2点)充电时,不同像素单元的驱动晶体管的栅极电压会有差异,Vdd下降对电流的影响会导致的不同像素的亮度不均的问题。 [0060] Example. 1, T5 connected to a first power source line ELVDD, the first power line ELVDD current resistance drop (IR drop) results in a voltage V dd changes, therefore, T5 C1 of the second terminal (N2 dot) when charging, the gate voltage of the driving transistor of the pixel units will vary, Vdd decrease brightness unevenness problems affecting the different pixels of the current will result.

[0061] 因此本实施例的像素驱动电路还包括补偿信号线,用于补偿第一电源电压变化。 [0061] Thus the pixel drive circuit of the present embodiment further includes a compensation signal line, a first power supply voltage for compensating.

[0062] 具体地如图3所示,本实施例的像素驱动电路的结构与实施例1基本相同,不同的是本实施例中的像素驱动电路还包括补偿信号线Ref,发光控制单元的第五晶体管T5的源极连接该补偿信号线Ref。 [0062] Specifically, as shown in FIG. 3, the structure of the pixel driving circuit according to the present embodiment is substantially the same as in Example 1, except that the embodiment according to the present embodiment in the pixel driving circuit further includes a first compensation signal line Ref, the light emission control unit five source transistor T5 is connected to the compensation signal line Ref. 第五晶体管T5用于将补偿信号线电压V ief写入存储电容C1的第二端,并由存储电容C1转写至驱动晶体管T7栅极。 The fifth transistor T5 to compensate for the signal line voltage V ief written to the second terminal of the storage capacitor C1, the storage capacitor C1 by the transfer gate to the drive transistor T7. 第六晶体管T6的栅极连接所述发光控制线EM、源极连接发光器件D1的第一端、漏极连接驱动晶体管T7的漏极,第六晶体管用于控制发光器件发光。 The gate of the sixth transistor T6 is connected to the EM emission control line, a source connected to a first end of the light emitting device D1, a drain connected to the drain of the driving transistor T7, the sixth transistor for controlling the light emitting device to emit light. 驱动晶体管T7用于在发光控制单元的控制下根据包括数据电压、驱动晶体管阈值电压、第一电源电压、第一电源电压变化信息和补偿信号线电压的信息控制流向发光器件D1的电流大小。 The driving transistor T7 under control in accordance with the light emission control unit includes a data voltage, the threshold voltage of the transistor, a first power supply voltage, power supply voltage information of the first information and the compensation control signal line voltage magnitude of the current flowing to the light emitting device D1.

[0063] 如图4所示,本实施例的电路结构工作时包括三个阶段: [0063] As shown in FIG 4, the circuit structure including three phases of the working examples of the present embodiment:

[0064] 第一阶段tl :复位控制线Reset信号有效,Tl,T2打开,对存储电容C1两端进行复位。 [0064] The first stage tl: Reset a reset control line signal active, Tl, T2 is opened, both ends of the storage capacitor C1 is reset. 此时,N1点写入复位信号线int的电压V int,N2点为数据电压Vdata。 At this time, N1-point write voltage V int int the reset signal line, N2 point of the data voltage Vdata.

[0065] 第二阶段t2 :栅线信号有效,使得T3、T4打开,N2点写入Vdata,Nl点写入Vdd -Vth, 此时存储电容Cl存储的电压为Vdd - Vth - Vdata。 [0065] The second stage t2: gate line signal is active, so that T3, T4 is opened, N2 where writing Vdata, Nl where writing Vdd -Vth, where the voltage stored in storage capacitor Cl is Vdd - Vth - Vdata. 本阶段T3将包括第一电源电压信息和驱动晶体管的阈值电压的信息写入所述存储电容C1的第一端。 This stage T3 information including the threshold voltage of the first power supply voltage information and the driving transistor into the first terminal of the storage capacitor C1.

[0066] 第三阶段t3 :发光控制线ΕΜ的信号有效,Τ5、Τ6打开,与实施例1不同,Τ5连接补偿信号线Ref,Ν2点电位为VMf,Ν1点电位为Vdd - Vth - Vdata+VMf,这也就是驱动晶体管的栅极电位,驱动晶体管的源极电位为Vdd,栅源电压Vgs为Vdd - Vth - Vdata+VMf - Vdd,流向发光器件的电流为I = 1/2μ CM(W/L) (Vgs - Vth)2 = 1/2μ CM(W/L) (Vref - Vdata)2。 [0066] The third stage t3: ΕΜ emission control line signal active, Τ5, Τ6 open, unlike Example 1, Τ5 compensation signal lines connected to Ref, Ν2 point potential VMf, Ν1 point potential Vdd - Vth - Vdata + VMF, which is the gate potential of the driving transistor, the source potential of the driving transistor is Vdd, the gate-source voltage Vgs is Vdd - Vth - Vdata + VMf - Vdd, the current flowing to the light emitting device I = 1 / 2μ CM (W / L) (Vgs - Vth) 2 = 1 / 2μ CM (W / L) (Vref - Vdata) 2. 其中,μ 为载流子迁移率,CM为栅氧化层电容,W/L为驱动晶体管的宽长比。 Wherein, μ is the carrier mobility, CM is the gate oxide capacitance, W / L of the driving transistor width to length ratio.

[0067] 由上述流向发光器件的电流的公式可看出,该电流I已经与驱动晶体管T7的阈值电压vth无关,因此避免了有源矩阵有机电致发光显示器件中不同像素因其驱动晶体管的阈值电压不同而造成的显示亮度不均的问题。 [0067] As can be seen from the formula the current flowing to the light emitting device, the current I vth has nothing to do with the threshold voltage of the transistor T7, thus avoiding an active matrix organic electroluminescent display device driving transistor because the pixel different the problem of uneven display luminance different threshold voltages caused. 而且该电流I与vdd无关,VMf只是对存储电容充电,相应线路上电流较小,电压降也就较小,存储电容与驱动晶体管的栅极连接,因为vraf相对vdd稳定,驱动晶体管的栅极电压也就较稳定,相对由Vdd对电容充电(实施例1)的方式,可以避免v dd下降对电流的影响导致的不同像素的亮度不均的问题。 And regardless of the current I and vdd, VMF only charge storage capacitor, a respective line current is small, there is a small voltage drop, the storage capacitor connected to the gate of the driving transistor, as vraf relatively stable vdd, the gate of the driving transistor voltage is also more stable relative to the Vdd to charge the capacitor (Example 1) manner, the luminance unevenness can be avoided v problems resulting from different pixels of the impact on the current dd decrease.

[0068] 上述实施例1和实施例2中的驱动晶体管、第一晶体管、第二晶体管、第三晶体管、 第四晶体管、第五晶体管、第六晶体管均为P型晶体管。 [0068] Example 1 and in Example 2 the driving transistor, the first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor are P-type transistors. 当然也可以是N型,或P型和N型的组合,只是栅极控制信号线的有效信号不同。 Of course, it can be N-type, or a combination of P-type and N-type, but different gate control signal line valid signal.

[0069] 实施例3 [0069] Example 3

[0070] 本实用新型提供了一种上述实施例1或实施例2的像素驱动电路的像素驱动方法,包括以下过程: [0070] The present invention provides a pixel above embodiment 1 or embodiment driving method of a pixel driving circuit in Example 2, the process comprising:

[0071] 复位阶段,复位单元复位所述存储电容两端的电压为预定电压; [0071] The reset phase, the reset unit resets the voltage across the storage capacitor to a predetermined voltage;

[0072] 数据电压写入阶段,数据写入单元向所述存储电容的第二端写入数据电压,所述补偿单元向存储电容的第一端写入包括驱动晶体管的阈值电压信息以及第一电源电压信息; [0072] The data voltage write phase, data writing unit writes a data voltage to the second terminal of the storage capacitor, the compensation unit includes information written threshold voltage of the driving transistor to the first terminal of the storage capacitor and the first power supply voltage information;

[0073] 发光阶段,存储电容将包括数据电压的信息转写至驱动晶体管的栅极,所述驱动晶体管在发光控制单元的控制下根据包括所述数据电压、驱动晶体管阈值电压以及第一电源电压的信息控制流向发光器件的电流大小,以驱动所述发光器件发光。 [0073] The light emission phase, the storage capacitor voltage information including data transfer to the gate of the driving transistor, the driving transistor under the control of the light emission control unit comprises according to the data voltage, the threshold voltage of the transistor and a first supply voltage the magnitude of the current flowing to the control information of the light emitting device to drive the light emitting device to emit light.

[0074] 所述复位阶段中,所述复位单元复位所述存储电容两端的电压分别为复位信号线电压和数据电压。 [0074] In the reset phase, the reset unit resetting the voltage across the storage capacitor are reset signal line voltage and the data voltage.

[0075] 对于实施例1的电路,所述发光阶段还包括:所述发光控制单元向所述存储电容的第二端写入第一电源电压,所述存储电容将包括所述第一电源电压以及包括数据电压的信息转写至驱动晶体管的栅极,所述驱动晶体管在发光控制单元的控制下根据包括所述数据电压、驱动晶体管阈值电压、第一电源电压的信息控制流向发光器件的电流大小,以驱动所述发光器件发光。 [0075] For the circuit according to embodiment 1, the emission phase further comprises: light emission control unit writes said first power source voltage to the second terminal of the storage capacitor, the storage capacitor including the first power supply voltage includes information and a current transfer the data voltage to the gate of the driving transistor, the driving transistor in a light emission control unit under the control of the data voltage, a threshold voltage of the driving transistor, a first power supply voltage information to control the flow of the light emitting device according comprising size, to drive the light emitting device to emit light.

[0076] 对于实施例2的电路,所述发光阶段还包括:所述发光控制单元向所述存储电容的第二端写入补偿信号线电压,所述存储电容将包括所述补偿信号线电压以及包括数据电压的信息转写至驱动晶体管的栅极,所述驱动晶体管在发光控制单元的控制下根据包括所述数据电压、驱动晶体管阈值电压、第一电源电压和补偿信号线电压的信息控制流向发光器件的电流大小,以驱动所述发光器件发光。 [0076] For the circuit according to embodiment 2, the emission phase further comprises: light emission control unit writes the compensation signal voltage to the second line terminal of the storage capacitor, the storage capacitor line voltage comprising the compensation signal includes information and transfer the data voltage to the gate of the driving transistor, the driving transistor under the control of the light emission control unit according to the control information comprises the data voltage, the threshold voltage of the transistor, a first power supply voltage and the line voltage compensation signal the magnitude of the current flowing to the light emitting device to drive the light emitting device to emit light.

[0077] 具体驱动步骤可参见实施例1和实施例2的三个工作阶段的介绍,此处不在赘述。 [0077] Referring specifically described driving steps three sessions Example 1 and Example 2 of the embodiment, not further described herein.

[0078] 实施例4 [0078] Example 4

[0079] 本实施例提供了一种阵列基板,包括上述实施例1或2的像素驱动电路。 [0079] The present embodiment provides an array substrate comprising a pixel Example 1 or 2 above driving circuit.

[0080] 实施例5 [0080] Example 5

[0081] 本实施例提供了一种显示装置,包括实施例4所述的阵列基板。 [0081] The present embodiment provides a display device comprising the array substrate according to Example 4. 该显示装置可以为:AM0LED面板、电视、数码相框、手机、平板电脑等具有任何显示功能的产品或部件。 The display device may be: AM0LED panel, television, digital photo frame, a mobile phone, a tablet computer products having a display function or any member.

[〇〇82] 以上实施方式仅用于说明本实用新型,而并非对本实用新型的限制,有关技术领域的普通技术人员,在不脱离本实用新型的精神和范围的情况下,还可以做出各种变化和变型,因此所有等同的技术方案也属于本实用新型的范畴,本实用新型的专利保护范围应由权利要求限定。 [〇〇82] above embodiments are merely illustrative of the present invention, rather than limiting the present invention, relating to ordinary skill in the art, without departing from the spirit and scope of the invention also may be made various changes and modifications, all equivalent technical solutions also belong to the scope of the present invention, the present invention defines the scope of protection defined by the appended claims.

Claims (13)

1. 一种像素驱动电路,其特征在于,包括:数据线、栅线、第一电源线、第二电源线、发光器件、驱动晶体管、存储电容、复位单元、数据写入单元,补偿单元及发光控制单元;所述数据线用于提供数据电压; 所述栅线用于提供扫描电压; 所述第一电源线用于提供第一电源电压,所述第二电源线用于提供第二电源电压; 所述复位单元用于复位所述存储电容两端的电压为预定电压; 所述数据写入单元连接栅线、数据线及所述存储电容的第二端,用于向所述存储电容的第二端写入包括数据电压的信息, 所述补偿单元连接栅线、存储电容的第一端和驱动晶体管,用于向存储电容的第一端写入包括驱动晶体管阈值电压的信息以及第一电源电压的信息; 所述发光控制单元连接所述存储电容、驱动晶体管和所述发光器件,用于控制所述驱动晶体管驱动发光 1. A pixel driving circuit comprising: a data line, a gate line, a first power source line, second power supply line, a light emitting device, a driving transistor, a storage capacitor, a reset unit, a data writing unit, and a compensation unit light emission control means; a data line for supplying a data voltage; the gate line for supplying a scan voltage; said first power source line for supplying a first power source voltage, the second power supply line for supplying a second power source voltage; reset means for resetting the voltage across the storage capacitor to a predetermined voltage; data writing unit connected to the gate line, data line and the second terminal of the storage capacitor, the storage capacitor is used to the second end of the write information includes a data voltage, the compensation unit is connected to a gate line, a first terminal of the storage capacitor and a drive transistor for writing information includes a drive transistor threshold voltage to a first terminal of the storage capacitor and the first supply voltage information; the light emission control unit is connected to the storage capacitor, the driving transistor and the light emitting device, the light emitting drive transistor for controlling the drive 件发光; 所述存储电容的第一端连接驱动晶体管的栅极,用于将包括数据电压的信息转写至驱动晶体管的栅极; 所述驱动晶体管连接第一电源线,所述发光器件连接第二电源线,所述驱动晶体管用于在发光控制单元的控制下根据包括所述数据电压、驱动晶体管阈值电压以及第一电源电压的信息控制流向发光器件的电流大小。 A light emitting element; a first terminal connected to the storage capacitor of the gate of the driving transistor, the information includes data for transfer to the gate voltage of the driving transistor; drive transistor connected to said first power supply line connected to the light emitting device a second power source line, a transistor for driving the light emission under the control of the control unit according to the data voltage comprises, driving information and the threshold voltage of the transistor of the first power supply voltage controlling the magnitude of the current flowing to the light emitting device.
2. 如权利要求1所述的像素驱动电路,其特征在于,所述复位单元包括:复位控制线、 复位信号线、第一晶体管和第二晶体管,所述第一晶体管的栅极连接所述复位控制线、源极连接所述复位信号线、漏极连接所述存储电容的第一端,所述第一晶体管用于将复位信号线电压写入所述存储电容的第一端;所述第二晶体管的栅极连接所述复位控制线、源极连接所述数据线、漏极连接所述存储电容的第二端,所述第二晶体管用于将数据电压写入所述存储电容的第二端。 The gate of the first transistor is connected to a reset control line, the reset signal line, the first and second transistors, said: The pixel as claimed in claim 1, a driving circuit, wherein said reset means comprises a reset control line, a source connected to the reset signal line, a drain connected to a first terminal of the storage capacitor, a first terminal of said first transistor to the reset signal line voltage written in the storage capacitor; the the gate of the second transistor is connected to a reset control line, a source connected to the data line, a drain connected to the second terminal of the storage capacitor, the second transistor for transmitting the data written in the storage capacitor voltage The second end.
3. 如权利要求2所述的像素驱动电路,其特征在于,所述第一晶体管和第二晶体管均为P型晶体管。 The pixel as claimed in claim 2, driving circuit, wherein said first and second transistors are P-type transistors.
4. 如权利要求1所述的像素驱动电路,其特征在于,所述数据写入单元包括:第四晶体管;所述第四晶体管的栅极连接所述栅线、源极连接所述数据线、漏极连接所述存储电容的第二端,所述第四晶体管用于将数据电压写入存储电容的第二端。 The pixel driving circuit according to claim 1, wherein said data writing means includes: a fourth transistor; a gate of the fourth transistor is connected to the gate line, a source connected to the data line , a drain connected to the second end of the storage capacitor, a second terminal of the fourth transistor for writing data to the storage capacitor voltage.
5. 如权利要求4所述的像素驱动电路,其特征在于,所述第四晶体管为P型晶体管。 The pixel as claimed in claim 4, wherein the driving circuit, wherein said fourth transistor is a P-type transistor.
6. 如权利要求1所述的像素驱动电路,其特征在于,所述补偿单元包括:第三晶体管; 所述第三晶体管的栅极连接所述栅线、源极连接所述存储电容的第一端、漏极连接所述驱动晶体管的漏极,所述第三晶体管用于将包括驱动晶体管的阈值电压信息以及第一电源电压的信息写入所述存储电容的第一端。 The pixel driving circuit according to claim 1, wherein said compensation unit comprises: a third transistor; the second storage capacitor connected to the gate line of the gate of the third transistor, a source connected One end of a drain connected to the drain of the driving transistor, the third transistor configured to include a threshold voltage information of the driving transistor and the first end of the first power supply voltage information written in the storage capacitor.
7. 如权利要求6所述的像素驱动电路,其特征在于,所述第三晶体管为P型晶体管。 7. The pixel driving circuit of claim 6, wherein said third transistor is a P-type transistor.
8. 如权利要求1所述的像素驱动电路,其特征在于,还包括补偿信号线,所述发光控制单元包括:发光控制线、第五晶体管和第六晶体管;所述第五晶体管的栅极连接所述发光控制线、源极连接所述补偿信号线、漏极连接所述存储电容的第二端,所述第五晶体管用于将补偿信号线电压写入存储电容的第二端,并由存储电容转写至驱动晶体管栅极;所述第六晶体管的栅极连接所述发光控制线、源极连接所述发光器件的第一端、漏极连接所述驱动晶体管的漏极,所述第六晶体管用于控制发光器件发光,所述驱动晶体管用于在发光控制单元的控制下根据包括所述数据电压、驱动晶体管阈值电压、第一电源电压和补偿信号线电压的信息控制流向发光器件的电流大小。 The gate of the fifth transistor; light emission control line, the fifth and sixth transistors: the pixel driving circuit as claimed in claim 1, characterized by further comprising a compensation signal lines, the light emission control means comprises the light emission control line is connected, a source connected to the compensation signal line, a drain connected to the second end of the storage capacitor, a second terminal of the fifth transistor for compensating the line voltage signal into the storage capacitor, and written by the storage capacitor to the driving transistor gate turn; the emission control line connected to the gate of said sixth transistor, a source connected to a first end of the light emitting device, a drain connected to the drain of the driving transistor, the said sixth transistor for controlling the emission device to emit light, the driving voltage for the data transistor, the threshold voltage of the transistor, a first power source voltage information and the compensation signal to the light emitting control line voltage under the control of the control unit according to the light emission comprises the current size of the device.
9. 如权利要求1所述的像素驱动电路,其特征在于,所述发光控制单元包括:发光控制线、第五晶体管和第六晶体管;所述第五晶体管的栅极连接所述发光控制线、源极连接所述第一电源线、漏极连接所述存储电容的第二端,所述第五晶体管用于将所述第一电源电压写入存储电容的第二端,并由存储电容转写至驱动晶体管栅极;所述第六晶体管的栅极连接所述发光控制线、源极连接所述发光器件的第一端、漏极连接所述驱动晶体管的漏极,所述第六晶体管用于控制发光器件发光,所述驱动晶体管用于在发光控制单元的控制下根据包括所述数据电压、驱动晶体管阈值电压、第一电源电压的信息控制流向发光器件的电流大小。 9. The pixel driving circuit of claim 1, wherein said light emission control means comprises: light emission control line, the fifth and sixth transistors; a gate of the fifth transistor is connected to the emission control line a source connected to said first power source line, a drain connected to the second terminal of the storage capacitor, a second terminal of the fifth transistor to the first supply voltage written in the storage capacitor, the storage capacitor by transfer to the drive transistor gate; the light emission control line connected to the gate of the sixth transistor, a source connected to a first end of the light emitting device, a drain connected to the drain of the driving transistor, the sixth a transistor for controlling the emission light emitting device, the driving transistor under control of the light emission control unit comprises according to the data voltage, the threshold voltage of the transistor, the control information of the first power supply voltage magnitude of the current flowing to the light emitting device.
10. 如权利要求8或9所述的像素驱动电路,其特征在于,所述第五晶体管和第六晶体管均为P型晶体管。 10. The pixel of claim 8 or claim 9, wherein the driving circuit, wherein said fifth and sixth transistors are P-type transistors.
11. 如权利要求1〜9中任一项所述的像素驱动电路,其特征在于,所述驱动晶体管均为P型晶体管。 11. The pixel driving circuit as claimed in any one of claims 1~9, wherein, the driving transistor are P-type transistors.
12. -种阵列基板,其特征在于,包括如权利要求1〜11中任一项所述的像素驱动电路。 12. - kind of array substrate comprising a pixel as claimed in any one of claims 1~11 driving circuit.
13. -种显示装置,其特征在于,包括如权利要求12所述的阵列基板。 13. - kind of display device comprising the array substrate as claimed in claim 12.
CN201420317889.1U 2014-06-13 2014-06-13 Pixel drive circuit, array substrate and display device CN203882587U (en)

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