CN104485078A - Gate drive circuit, display panel and display device - Google Patents

Gate drive circuit, display panel and display device Download PDF

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CN104485078A
CN104485078A CN201410850569.7A CN201410850569A CN104485078A CN 104485078 A CN104485078 A CN 104485078A CN 201410850569 A CN201410850569 A CN 201410850569A CN 104485078 A CN104485078 A CN 104485078A
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circuit module
voltage
gate drive
drive signal
level shifting
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CN104485078B (en
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郑亮亮
金婷婷
姚利利
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BOE Technology Group Co Ltd
Hefei BOE Optoelectronics Technology Co Ltd
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BOE Technology Group Co Ltd
Hefei BOE Optoelectronics Technology Co Ltd
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Abstract

本发明提供了一种栅极驱动电路、显示面板及显示装置,用以通过增设的电压调节网络模块,为每一电平转换电路模块提供该电平转换电路模块对应的栅极驱动信号,从而规避由工艺波动引起的TFT特性差异,改善显示面板产生暗亮线现象。所述栅极驱动电路包括电压生成电路模块、电压调节网络模块以及至少两个电平转换电路模块;所述电压调节网络模块具体用于:接收电压生成电路模块生成的栅极驱动信号;根据预设的代码,调整接收到的栅极驱动信号的电压,得到每一电平转换电路模块分别对应的栅极驱动信号,其中,所述代码为针对每一所述电平转换电路模块设置的;将每一电平转换电路模块所对应的栅极驱动信号分别发送给该电平转换电路模块。

The present invention provides a gate drive circuit, a display panel and a display device, which are used to provide each level conversion circuit module with a gate drive signal corresponding to the level conversion circuit module through an additional voltage regulation network module, thereby Avoid the difference in TFT characteristics caused by process fluctuations, and improve the phenomenon of dark and bright lines on the display panel. The gate drive circuit includes a voltage generation circuit module, a voltage regulation network module, and at least two level conversion circuit modules; the voltage regulation network module is specifically used to: receive the gate drive signal generated by the voltage generation circuit module; Set the code to adjust the voltage of the received gate drive signal to obtain the gate drive signal corresponding to each level shifting circuit module, wherein the code is set for each of the level shifting circuit modules; The gate drive signal corresponding to each level conversion circuit module is sent to the level conversion circuit module respectively.

Description

栅极驱动电路、显示面板及显示装置Gate driving circuit, display panel and display device

技术领域technical field

本发明涉及显示技术领域,尤其涉及一种栅极驱动电路、显示面板及显示装置。The present invention relates to the field of display technology, in particular to a gate drive circuit, a display panel and a display device.

背景技术Background technique

传统的液晶显示面板包括时序控制器芯片T-CON、源极驱动芯片Source IC以及栅极驱动芯片Gate IC。T-CON芯片为栅极驱动芯片提供起始信号STV、时钟信号CPV或者输出使能信号OE,用于生成开启或者关闭薄膜晶体管的电压,于此同时,为源极驱动芯片提供数据信号DATA、时钟信号CLK、加载信号LOAD或者极性信号POL,用以生成加载在薄膜晶体管(Thin FilmTransistor,TFT)上的充电信号。该液晶面板的驱动架构如图1所述。A traditional liquid crystal display panel includes a timing controller chip T-CON, a source driver chip Source IC and a gate driver chip Gate IC. The T-CON chip provides the start signal STV, the clock signal CPV or the output enable signal OE for the gate driver chip to generate the voltage for turning on or off the thin film transistor, and at the same time, provides the source driver chip with the data signal DATA, The clock signal CLK, the loading signal LOAD or the polarity signal POL are used to generate a charging signal loaded on a thin film transistor (Thin Film Transistor, TFT). The driving architecture of the liquid crystal panel is as shown in FIG. 1 .

然而,随着显示面板的非显示区域设计的越来越窄,传统的液晶显示面板的驱动架构已经不能够满足需求。由于GIP(Gate In Panel,面内栅极)技术将液晶面板的栅极驱动电路Source Driver集成在阵列基板上,生成高压GIP信号(High Voltage GIP Signal,HV GIP Signal),并将该高压GIP信号发送给GIP电路GIP Circuit,再有GIP电路生成栅极驱动信号,从而对液晶显示面板扫描驱动,因此相比传统的液晶显示面板的驱动技术,不仅节省去了栅极驱动电路的焊接(bonding)区域以及扇出(fan-out)布线空间,而且实现了窄边框的设计。应用GIP技术的液晶面板的驱动架构如图2所述。However, as the non-display area of the display panel is designed to be narrower and narrower, the traditional driving architecture of the liquid crystal display panel cannot meet the demand. Due to the GIP (Gate In Panel, in-plane gate) technology, the gate drive circuit Source Driver of the liquid crystal panel is integrated on the array substrate to generate a high-voltage GIP signal (High Voltage GIP Signal, HV GIP Signal), and the high-voltage GIP signal Send it to the GIP circuit GIP Circuit, and then the GIP circuit generates the gate drive signal to scan and drive the LCD panel. Therefore, compared with the traditional LCD panel drive technology, it not only saves the welding of the gate drive circuit (bonding) Area and fan-out (fan-out) wiring space, and realize the design of narrow frame. The driving architecture of the liquid crystal panel applying the GIP technology is described in FIG. 2 .

GIP显示面板将传统显示面板中的时序控制器T-CON芯片、源极驱动芯片以及栅极驱动芯片均集成在栅极驱动电路中,该单芯片方案下的栅极驱动电路的电路结构如图3所示。首先由电压生成电路模块301(Voltage GateHigh\Voltage Gate Low Generate Circuit,VGH/VGL Generate Circuit)生成高压信号(Voltage Gate High,VGH)或者低压信号(Voltage Gate Low,VGL),并将VGH\VGL同时供给分布于单芯片两端的电平转换电路模块302(LevelShift Circuit),该电平转换电路模块将生成高压GIP信号。其中,所述栅极驱动电路还包括时序控制器芯片T-CON 303。目前,GIP技术的栅极驱动电路多采用双边4phase或者8phase,甚至16phase的CLK驱动技术。由于该GIP技术对显示面板的制作工艺的要求较高,即显示面板两侧的GIP电路需控制所有的薄膜晶体管在同时打开。然而,利用现有技术切割中小尺寸面板的工艺波动较大,显示面板两侧的GIP电路开启或者关闭的薄膜晶体管的输出电压不同,导致显示面板产生横向亮暗线H-Line的显示问题。The GIP display panel integrates the timing controller T-CON chip, source driver chip and gate driver chip in the traditional display panel into the gate driver circuit. The circuit structure of the gate driver circuit under this single chip solution is shown in the figure 3 shown. First, the voltage generating circuit module 301 (Voltage Gate High\Voltage Gate Low Generate Circuit, VGH/VGL Generate Circuit) generates a high voltage signal (Voltage Gate High, VGH) or a low voltage signal (Voltage Gate Low, VGL), and simultaneously VGH\VGL Supply the level conversion circuit module 302 (LevelShift Circuit) distributed at both ends of the single chip, and the level conversion circuit module will generate a high-voltage GIP signal. Wherein, the gate drive circuit further includes a timing controller chip T-CON 303. At present, the gate drive circuit of GIP technology mostly adopts bilateral 4phase or 8phase, or even 16phase CLK drive technology. Since the GIP technology has high requirements on the manufacturing process of the display panel, that is, the GIP circuits on both sides of the display panel need to control all the thin film transistors to be turned on at the same time. However, the process of cutting small and medium-sized panels using the existing technology fluctuates greatly, and the output voltages of the thin film transistors that are turned on or off by the GIP circuits on both sides of the display panel are different, resulting in the display problem of horizontal bright and dark lines H-Line on the display panel.

综上所述,由于利用现有技术的工艺波动较大,使得显示面板两侧的GIP电路开启或者关闭的薄膜晶体管的输出电压不同,导致显示面板两侧的GIP单元的TFT开启时间不同,即TFT的显示亮度不同,从而使得显示面板产生横向亮暗线。In summary, due to the large fluctuations in the process of the prior art, the output voltages of the thin film transistors that are turned on or off by the GIP circuits on both sides of the display panel are different, resulting in different turn-on times of the TFTs of the GIP units on both sides of the display panel, that is, The display brightness of the TFT is different, so that the display panel produces horizontal bright and dark lines.

发明内容Contents of the invention

本发明实施例提供了一种栅极驱动电路、显示面板及显示装置,用以通过增设的电压调节网络模块,为每一电平转换电路模块提供该电平转换电路模块对应的栅极驱动信号,从而规避由工艺波动引起的TFT特性差异,改善显示面板产生暗亮线现象。Embodiments of the present invention provide a gate drive circuit, a display panel, and a display device, which are used to provide each level conversion circuit module with a gate drive signal corresponding to the level conversion circuit module through an additional voltage regulation network module , so as to avoid the difference in TFT characteristics caused by process fluctuations, and improve the phenomenon of dark and bright lines on the display panel.

本发明实施例提供的一种栅极驱动电路,包括电压生成电路模块以及至少两个电平转换电路模块,还包括:电压调节网络模块;A gate drive circuit provided by an embodiment of the present invention includes a voltage generation circuit module and at least two level conversion circuit modules, and also includes: a voltage regulation network module;

所述电压调节网络模块的输入端与所述电压生成电路模块的输出端相连,所述电压调节网络模块的每一输出端分别与该输出端一一对应的电平转换电路模块的输入端相连;The input terminal of the voltage regulation network module is connected to the output terminal of the voltage generation circuit module, and each output terminal of the voltage regulation network module is connected to the input terminal of the level conversion circuit module corresponding to the output terminal one by one. ;

所述电压调节网络模块,具体用于:The voltage regulating network module is specifically used for:

接收所述电压生成电路模块生成的栅极驱动信号;receiving a gate drive signal generated by the voltage generating circuit module;

根据预设的用于调整栅极驱动信号的电压的代码,调整接收到的栅极驱动信号的电压,得到每一所述电平转换电路模块分别对应的栅极驱动信号,其中,所述代码为针对每一所述电平转换电路模块设置的;According to the preset code for adjusting the voltage of the gate drive signal, the voltage of the received gate drive signal is adjusted to obtain the gate drive signal corresponding to each of the level conversion circuit modules, wherein the code set for each of the level conversion circuit modules;

将每一所述电平转换电路模块所对应的栅极驱动信号分别发送给该电平转换电路模块。The gate drive signal corresponding to each level conversion circuit module is sent to the level conversion circuit module respectively.

通过该栅极驱动电路中增设的电压调节网络模块,为每一电平转换电路模块提供该电平转换电路模块对应的栅极驱动信号,从而规避由工艺波动引起的TFT特性差异,改善显示面板产生暗亮线现象,甚至避免显示面板产生暗亮线。Through the voltage regulation network module added in the gate drive circuit, the gate drive signal corresponding to the level conversion circuit module is provided for each level conversion circuit module, thereby avoiding the difference in TFT characteristics caused by process fluctuations and improving the display panel. Produce dark and bright lines, and even avoid dark and bright lines on the display panel.

较佳地,所述电平转换电路模块的个数为两个,分别为第一电平转换电路模块以及第二电平转换电路模块;所述电压调节网络模块,包括:用于降低电压信号的电压的低压差跌落输出电路模块以及电压调节电路模块;Preferably, the number of the level shifting circuit modules is two, which are respectively the first level shifting circuit module and the second level shifting circuit module; the voltage regulating network module includes: Low voltage drop output circuit module and voltage regulation circuit module;

其中,所述低压差跌落输出电路模块的输入端与所述电压生成电路模块的输出端相连;所述低压差跌落输出电路模块的输出端与所述电压调节电路模块的第一输入端相连;所述电压调节电路模块的第一输出端与第一电平转换电路模块的输入端相连,所述电压调节电路模块的第二输出端与第二电平转换电路模块的输入端相连;Wherein, the input end of the low dropout output circuit module is connected to the output end of the voltage generation circuit module; the output end of the low dropout output circuit module is connected to the first input end of the voltage regulation circuit module; The first output terminal of the voltage regulation circuit module is connected to the input terminal of the first level conversion circuit module, and the second output terminal of the voltage regulation circuit module is connected to the input terminal of the second level conversion circuit module;

所述电压调节电路模块,具体用于:The voltage regulating circuit module is specifically used for:

接收所述低压差跌落输出电路模块发送的栅极驱动信号;receiving the gate drive signal sent by the low dropout output circuit module;

根据预设的针对第一电平转换电路模块对应的用于调整栅极驱动信号的电压的第一代码,调整接收到的栅极驱动信号的电压,得到第一栅极驱动信号,其中,所述第一代码为针对第一电平转换电路模块设置的;According to the preset first code for adjusting the voltage of the gate drive signal corresponding to the first level conversion circuit module, adjust the voltage of the received gate drive signal to obtain the first gate drive signal, wherein the The first code is set for the first level conversion circuit module;

根据预设的针对第二电平转换电路模块对应的用于调整栅极驱动信号的电压的第二代码,调整接收到的栅极驱动信号的电压,得到第二栅极驱动信号,其中,所述第二代码为针对第二电平转换电路模块设置的;According to the preset second code for adjusting the voltage of the gate drive signal corresponding to the second level conversion circuit module, adjust the voltage of the received gate drive signal to obtain the second gate drive signal, wherein the The second code is set for the second level conversion circuit module;

将所述第一栅极驱动信号发送到所述第一电平转换电路模块,将所述第二栅极驱动信号发送到所述第二电平转换电路模块。sending the first gate driving signal to the first level conversion circuit module, and sending the second gate driving signal to the second level conversion circuit module.

较佳地,所述电平转换电路模块的个数为两个,分别为第一电平转换电路模块以及第二电平转换电路模块;所述电压调节网络模块,包括:第一电压调节电路模块以及第二电压调节电路模块;Preferably, the number of the level shifting circuit modules is two, which are respectively the first level shifting circuit module and the second level shifting circuit module; the voltage regulating network module includes: a first voltage regulating circuit module and a second voltage regulating circuit module;

其中,第一电压调节电路模块的输入端以及第二电压调节电路模块的输入端分别与所述电压生成电路模块的输出端相连;Wherein, the input terminal of the first voltage regulating circuit module and the input terminal of the second voltage regulating circuit module are respectively connected to the output terminal of the voltage generating circuit module;

第一电压调节电路模块的输出端与第一电平转换电路模块的输入端相连,第二电压调节电路模块的输出端与第二电平转换电路模块的输入端相连;The output terminal of the first voltage regulation circuit module is connected to the input terminal of the first level conversion circuit module, and the output terminal of the second voltage regulation circuit module is connected to the input terminal of the second level conversion circuit module;

所述第一电压调节电路模块,具体用于:The first voltage regulation circuit module is specifically used for:

接收所述电压生成电路模块生成的栅极驱动信号;receiving a gate drive signal generated by the voltage generating circuit module;

根据预设的针对第一电平转换电路模块对应的用于调整栅极驱动信号的电压的第一代码,调整接收到的栅极驱动信号的电压,得到第一栅极驱动信号,其中,所述第一代码为针对第一电平转换电路模块设置的;According to the preset first code for adjusting the voltage of the gate drive signal corresponding to the first level conversion circuit module, adjust the voltage of the received gate drive signal to obtain the first gate drive signal, wherein the The first code is set for the first level conversion circuit module;

将所述第一栅极驱动信号发送到第一电平转换电路模块;sending the first gate drive signal to a first level conversion circuit module;

所述第二电压调节电路模块,具体用于:The second voltage regulation circuit module is specifically used for:

接收所述电压生成电路模块生成的栅极驱动信号;receiving a gate drive signal generated by the voltage generating circuit module;

根据预设的针对第二电平转换电路模块对应的用于调整栅极驱动信号的电压的第二代码,调整接收到的栅极驱动信号的电压,得到第二栅极驱动信号,其中,所述第二代码为针对第二电平转换电路模块设置的;According to the preset second code for adjusting the voltage of the gate drive signal corresponding to the second level conversion circuit module, adjust the voltage of the received gate drive signal to obtain the second gate drive signal, wherein the The second code is set for the second level conversion circuit module;

将所述第二栅极驱动信号发送到第二电平转换电路模块。sending the second gate drive signal to a second level conversion circuit module.

较佳地,所述电压调节电路模块包括:用于选择不同电阻值的电阻的选择单元以及至少两个不同电阻。Preferably, the voltage regulation circuit module includes: a selection unit for selecting resistors with different resistance values and at least two different resistors.

本发明实施例提供的一种显示面板,包括上述的栅极驱动电路以及至少两个面内栅极电路模块,其中,每一所述面内栅极电路模块的输入端与该面内栅极电路模块相对应的所述栅极驱动电路中的电平转换电路模块相连。A display panel provided by an embodiment of the present invention includes the above-mentioned gate drive circuit and at least two in-plane gate circuit modules, wherein the input end of each in-plane gate circuit module is connected to the in-plane gate circuit module. The level conversion circuit modules in the gate drive circuit corresponding to the circuit modules are connected.

通过该显示面板中的栅极驱动电路,为每一电平转换电路模块提供该电平转换电路模块对应的栅极驱动信号,从而规避由工艺波动引起的TFT特性差异,改善显示面板产生暗亮线现象,甚至避免显示面板产生暗亮线。Through the gate drive circuit in the display panel, each level conversion circuit module is provided with a gate drive signal corresponding to the level conversion circuit module, thereby avoiding the difference in TFT characteristics caused by process fluctuations, and improving the display panel to produce dark and bright line phenomenon, and even avoid dark and bright lines on the display panel.

较佳地,所述电平转换电路模块的个数为两个,分别为第一电平转换电路模块以及第二电平转换电路模块;所述面内栅极电路模块的个数为两个,分别为第一面内栅极电路模块以及第二面内栅极电路模块;Preferably, the number of the level shifting circuit modules is two, which are respectively the first level shifting circuit module and the second level shifting circuit module; the number of the in-plane gate circuit modules is two , are respectively the first in-plane gate circuit module and the second in-plane gate circuit module;

其中,所述第一电平转换电路模块的输出端与所述第一面内栅极电路模块的输入端相连,所述第二电平转换电路模块的输出端与所述第二面内栅极电路模块的输入端相连;Wherein, the output terminal of the first level conversion circuit module is connected to the input terminal of the first in-plane gate circuit module, and the output terminal of the second level conversion circuit module is connected to the second in-plane gate circuit module. The input terminal of the pole circuit module is connected;

所述第一面内栅极电路模块,具体用于:The first in-plane gate circuit module is specifically used for:

接收所述第一电平转换电路模块发送的第一栅极驱动信号;receiving a first gate drive signal sent by the first level conversion circuit module;

根据第一栅极驱动信号,驱动第一面内栅极电路模块所对应的薄膜晶体管;driving the thin film transistor corresponding to the first in-plane gate circuit module according to the first gate driving signal;

所述第二面内栅极电路模块,具体用于:The second in-plane gate circuit module is specifically used for:

接收所述第二电平转换电路模块发送的第二栅极驱动信号;receiving a second gate drive signal sent by the second level conversion circuit module;

根据第二栅极驱动信号,驱动第二面内栅极电路模块所对应的薄膜晶体管。The thin film transistor corresponding to the second in-plane gate circuit module is driven according to the second gate driving signal.

本发明实施例提供的一种显示装置,包括上述的显示面板。A display device provided by an embodiment of the present invention includes the above-mentioned display panel.

通过该显示装置中的显示面板,为每一电平转换电路模块提供该电平转换电路模块对应的栅极驱动信号,从而规避由工艺波动引起的TFT特性差异,改善显示面板产生暗亮线现象,甚至避免显示面板产生暗亮线。Through the display panel in the display device, each level conversion circuit module is provided with a gate drive signal corresponding to the level conversion circuit module, thereby avoiding the difference in TFT characteristics caused by process fluctuations and improving the phenomenon of dark and bright lines on the display panel. , and even avoid dark and bright lines on the display panel.

附图说明Description of drawings

图1为现有的传统的液晶显示面板的驱动架构的结构示意图;FIG. 1 is a structural schematic diagram of an existing traditional LCD panel driving architecture;

图2为现有的GIP液晶显示面板的驱动架构的结构示意图;FIG. 2 is a structural schematic diagram of a driving architecture of an existing GIP liquid crystal display panel;

图3为现有的单芯片方案下GIP中的栅极驱动电路的结构示意图;3 is a schematic structural diagram of a gate drive circuit in a GIP under an existing single-chip solution;

图4为本发明提供的一种栅极驱动电路的结构示意图;FIG. 4 is a schematic structural diagram of a gate drive circuit provided by the present invention;

图5为本发明提供了电压调节网络模块的栅极驱动的方法的流程示意图;FIG. 5 is a schematic flowchart of a method for gate driving of a voltage regulation network module provided by the present invention;

图6a为预设的电压差、目标电流与代码的对应关系的示意图;Fig. 6a is a schematic diagram of the corresponding relationship between the preset voltage difference, the target current and the code;

图6b为预设的电压差、目标电流以及电阻值的对应关系的示意图;FIG. 6b is a schematic diagram of the corresponding relationship between the preset voltage difference, the target current and the resistance value;

图7为本发明实施例一提供的栅极驱动电路的结构示意图;FIG. 7 is a schematic structural diagram of a gate drive circuit provided by Embodiment 1 of the present invention;

图8为本发明实施例一提供的电压调节电路模块的栅极驱动的方法的流程示意图;8 is a schematic flowchart of a method for driving a gate of a voltage regulation circuit module according to Embodiment 1 of the present invention;

图9为本发明实施例二提供的栅极驱动电路的结构示意图;FIG. 9 is a schematic structural diagram of a gate drive circuit provided in Embodiment 2 of the present invention;

图10为本发明实施例二提供的第一电压调节电路模块的栅极驱动的方法的流程示意图。FIG. 10 is a schematic flowchart of a method for driving a gate of a first voltage regulating circuit module according to Embodiment 2 of the present invention.

具体实施方式Detailed ways

本发明提供了一种栅极驱动电路、显示面板及显示装置,用以通过增设的电压调节网络模块,为每一电平转换电路模块提供该电平转换电路模块对应的栅极驱动信号,从而规避由工艺波动引起的TFT特性差异,实现了TFT的显示亮度相同,改善显示面板产生暗亮线现象,甚至避免显示面板产生暗亮线现象。The present invention provides a gate drive circuit, a display panel and a display device, which are used to provide each level conversion circuit module with a gate drive signal corresponding to the level conversion circuit module through an additional voltage regulation network module, thereby By avoiding the difference in TFT characteristics caused by process fluctuations, the display brightness of TFTs is the same, the phenomenon of dark and bright lines on the display panel is improved, and even the phenomenon of dark and bright lines on the display panel is avoided.

参见图4,本发明提供了一种栅极驱动电路,包括电压生成电路模块401、电压调节网络模块402以及至少两个电平转换电路模块403;Referring to FIG. 4, the present invention provides a gate drive circuit, including a voltage generation circuit module 401, a voltage regulation network module 402, and at least two level conversion circuit modules 403;

所述电压调节网络模块402的输入端与所述电压生成电路模块401的输出端相连,所述电压调节网络模块402的每一输出端分别与该输出端一一对应的电平转换电路模块403的输入端相连。The input terminal of the voltage regulation network module 402 is connected to the output terminal of the voltage generation circuit module 401, and each output terminal of the voltage regulation network module 402 is respectively corresponding to the level conversion circuit module 403 of the output terminal one by one. connected to the input.

参见图5,本发明提供了电压调节网络模块402的栅极驱动的方法,该方法包括:Referring to FIG. 5, the present invention provides a method for voltage regulating the gate drive of the network module 402, the method comprising:

S501、接收所述电压生成电路模块生成的栅极驱动信号;S501. Receive a gate drive signal generated by the voltage generating circuit module;

S502、根据预设的用于调整栅极驱动信号的电压的代码,调整接收到的栅极驱动信号的电压,得到每一所述电平转换电路模块分别对应的栅极驱动信号,其中,所述代码为针对每一所述电平转换电路模块设置的;S502. According to the preset code for adjusting the voltage of the gate drive signal, adjust the voltage of the received gate drive signal to obtain the gate drive signal corresponding to each of the level conversion circuit modules, wherein the Said code is set for each said level conversion circuit module;

S503、将每一所述电平转换电路模块所对应的栅极驱动信号分别发送给该电平转换电路模块。S503. Send the gate driving signal corresponding to each level shifting circuit module to the level shifting circuit module respectively.

本发明实施例提供了一种显示面板,包括上述的栅极驱动电路以及至少两个面内栅极(以下简称GIP)电路模块,其中,每一所述GIP电路模块的输入端与该GIP电路模块相对应的所述栅极驱动电路中的电平转换电路模块相连。An embodiment of the present invention provides a display panel, including the above-mentioned gate drive circuit and at least two gate-in-plane (GIP for short) circuit modules, wherein the input end of each GIP circuit module is connected to the GIP circuit The level conversion circuit modules in the gate drive circuit corresponding to the modules are connected.

通过该显示面板中的栅极驱动电路,为每一电平转换电路模块提供该电平转换电路模块对应的栅极驱动信号,从而规避由工艺波动引起的TFT特性差异,实现了TFT的显示亮度相同,改善显示面板产生暗亮线现象,甚至避免显示面板产生暗亮线现象。Through the gate drive circuit in the display panel, each level conversion circuit module is provided with a gate drive signal corresponding to the level conversion circuit module, thereby avoiding the difference in TFT characteristics caused by process fluctuations and realizing the display brightness of the TFT Similarly, the phenomenon of dark and bright lines on the display panel can be improved, and even the phenomenon of dark and bright lines on the display panel can be avoided.

具体地,所述电平转换电路模块的个数为两个,分别为第一电平转换电路模块以及第二电平转换电路模块;所述GIP电路模块的个数为两个,分别为第一GIP电路模块以及第二GIP电路模块;Specifically, the number of the level shifting circuit modules is two, which are the first level shifting circuit module and the second level shifting circuit module; the number of the GIP circuit modules is two, respectively a GIP circuit module and a second GIP circuit module;

其中,所述第一电平转换电路模块的输出端与所述第一GIP电路模块的输入端相连,所述第二电平转换电路模块的输出端与所述第二GIP电路模块的输入端相连;Wherein, the output end of the first level conversion circuit module is connected to the input end of the first GIP circuit module, the output end of the second level conversion circuit module is connected to the input end of the second GIP circuit module connected;

所述GIP电路模块,具体用于:The GIP circuit module is specifically used for:

接收与该GIP电路模块相连的所述电平转换电路模块发送的栅极驱动信号;receiving a gate drive signal sent by the level conversion circuit module connected to the GIP circuit module;

利用接收到的栅极驱动信号,驱动该GIP电路模块所对应的薄膜晶体管。The thin film transistor corresponding to the GIP circuit module is driven by the received gate driving signal.

具体地,预设的代码为根据目标电流的数值以及栅极驱动电路中的电压生成电路模块生成的栅极驱动信号的电压与目标电压的电压差确定的,也就是说,图6a与图6b所示的栅极驱动电路中的电压生成电路模块生成的栅极驱动信号的电压与目标电压的电压差、目标电流、调节电阻值以及代码的对应关系表。Specifically, the preset code is determined according to the value of the target current and the voltage difference between the voltage of the gate drive signal generated by the voltage generating circuit module in the gate drive circuit and the target voltage, that is to say, FIG. 6a and FIG. 6b The voltage generation circuit module in the gate drive circuit is shown as a table of the correspondence relationship between the voltage difference of the gate drive signal and the target voltage, the target current, the adjusted resistance value and the code.

例如,当预设的电压差为0.5伏,单边的目标电流为0.2毫安时,可根据图6a确定发送代码“00”,即可实现将本发明提供的栅极驱动电路中的电压生成电路模块401生成的电压信号的电压降低0.5伏,且保证通过该电压调节网络模块402的电流为0.2毫安;当预设的电压差为1.0伏,单边的目标电流为1.0毫安时,可根据图6a确定发送代码“11”,即可实现将本发明提供的栅极驱动电路中的电压生成电路模块401生成的电压信号的电压降低1.0伏,且保证通过该电压调节网络模块402的电流为1.0毫安。For example, when the preset voltage difference is 0.5 volts and the unilateral target current is 0.2 mA, the sending code "00" can be determined according to Figure 6a, and the voltage generation in the gate drive circuit provided by the present invention can be realized The voltage of the voltage signal generated by the circuit module 401 is reduced by 0.5 volts, and the current through the voltage regulation network module 402 is guaranteed to be 0.2 mA; when the preset voltage difference is 1.0 volts and the unilateral target current is 1.0 mA, The transmission code "11" can be determined according to Figure 6a, which can reduce the voltage of the voltage signal generated by the voltage generation circuit module 401 in the gate drive circuit provided by the present invention by 1.0 volts, and ensure that the voltage of the network module 402 is adjusted by the voltage. current is 1.0mA.

又例如,当预设的电压差为0.5伏,单边的目标电流为0.2毫安时,可根据图6b确定发送代码“00”,即可选择内阻为2.5ohm的对应芯片;当预设的电压差为1.0伏,单边的目标电流为1.0毫安时,可根据图6b确定发送代码“11”,即可选择内阻为1.0ohm的对应芯片。For another example, when the preset voltage difference is 0.5 volts and the unilateral target current is 0.2 milliamperes, the sending code "00" can be determined according to Figure 6b, and the corresponding chip with an internal resistance of 2.5 ohm can be selected; when the preset When the voltage difference is 1.0 volts and the target current on one side is 1.0 mA, the code "11" can be sent according to Figure 6b, and the corresponding chip with an internal resistance of 1.0 ohm can be selected.

其中,将栅极驱动电路中的电压生成电路模块生成的栅极驱动信号的电压调整到目标电压,主要通过以下两种方式:Wherein, the voltage of the gate drive signal generated by the voltage generation circuit module in the gate drive circuit is adjusted to the target voltage mainly through the following two methods:

其一为手动调节,即获取VGH电压值,因此VGH电压值以及目标电压值已知;再通过模拟单边电流值,选取相应的初始电阻,手动量测输出端的输出电压;再根据测量得到的VGHL/VGHR,调大或者调小电阻值,从而得到目标电压。One is manual adjustment, that is, to obtain the VGH voltage value, so the VGH voltage value and the target voltage value are known; then by simulating the unilateral current value, select the corresponding initial resistance, and manually measure the output voltage of the output terminal; then according to the measured VGHL/VGHR, increase or decrease the resistance value to get the target voltage.

其二为自动调节,即获取VGH电压值,因此VGH电压值以及目标电压值已知;再通过模拟单边电流值,选取相应的初始电阻,在系统处理器的内部增加模数转换电路(Analog to Digital Converter,ADC),从而能够自动采集VGHL/VGHR的电压值。若低于需求数值,则调小中间的电阻;若高于需求数值,则调大中间的电阻,电阻的电阻值的调整是通过系统处理器下发代码来实现的。由于VGL的调整原理与VGH的调整类似,此处就不再赘述。The second is automatic adjustment, that is, to obtain the VGH voltage value, so the VGH voltage value and the target voltage value are known; then by simulating the unilateral current value, select the corresponding initial resistance, and add an analog-to-digital conversion circuit (Analog to Digital Converter, ADC), which can automatically collect the voltage value of VGHL/VGHR. If it is lower than the required value, turn down the middle resistance; if it is higher than the required value, turn up the middle resistance. The adjustment of the resistance value of the resistance is realized by sending codes from the system processor. Since the adjustment principle of VGL is similar to that of VGH, it will not be repeated here.

系统处理器下发的测试确定针对该显示面板中每一GIP电路所对应的用于调节栅极驱动信号的电压的代码,并将该代码固化在电压调节网络模块中。The test issued by the system processor determines the code for adjusting the voltage of the gate driving signal corresponding to each GIP circuit in the display panel, and the code is fixed in the voltage adjustment network module.

具体地,所述系统处理器可通过系统主接口与显示面板相连,其中,所述系统主接口包括:移动产业处理器接口(Mobile Industry Processor Interface,MIPI)。Specifically, the system processor can be connected to the display panel through a system main interface, wherein the system main interface includes: Mobile Industry Processor Interface (Mobile Industry Processor Interface, MIPI).

具体地,所述系统处理器可以为主处理器芯片。Specifically, the system processor may be a main processor chip.

本发明提供的一种显示装置,包括上述的显示面板。所述显示装置可以为:液晶面板、电子纸、有机发光二极管(Organic Light-Emitting Diode,OLED)面板、手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。A display device provided by the present invention includes the above-mentioned display panel. The display device can be: liquid crystal panel, electronic paper, organic light-emitting diode (Organic Light-Emitting Diode, OLED) panel, mobile phone, tablet computer, television, monitor, notebook computer, digital photo frame, navigator, etc. products or components.

为能够更好的介绍电压调节网络模块的具体作用,下面将结合附图和实施例对本发明进行解释。In order to better introduce the specific functions of the voltage regulation network module, the present invention will be explained below in conjunction with the drawings and embodiments.

参见图7,本发明实施例一提供了栅极驱动电路,包括电压生成电路模块401、电平转换电路模块以及电压调节网络模块。其中,电平转换电路模块的个数为两个,分别为第一电平转换电路模块703以及第二电平转换电路模块704;电压调节网络模块,包括:用于降低电压信号的电压的低压差跌落输出(Low Drop Output,LDO)电路模块701以及电压调节电路模块702。Referring to FIG. 7 , Embodiment 1 of the present invention provides a gate drive circuit, including a voltage generation circuit module 401 , a level conversion circuit module, and a voltage regulation network module. Wherein, the number of level shifting circuit modules is two, which are respectively the first level shifting circuit module 703 and the second level shifting circuit module 704; the voltage regulation network module includes: a low-voltage circuit module for reducing the voltage of the voltage signal A low drop output (Low Drop Output, LDO) circuit module 701 and a voltage regulation circuit module 702.

LDO电路模块701的输入端与电压生成电路模块401的输出端相连,LDO电路模块701的输出端与电压调节电路模块702的第一输入端相连;The input end of the LDO circuit module 701 is connected to the output end of the voltage generation circuit module 401, and the output end of the LDO circuit module 701 is connected to the first input end of the voltage regulation circuit module 702;

电压调节电路模块702的第一输出端与第一电平转换电路模块703的输入端相连,电压调节电路模块702的第二输出端与第二电平转换电路模块704的输入端相连。The first output terminal of the voltage regulation circuit module 702 is connected to the input terminal of the first level conversion circuit module 703 , and the second output terminal of the voltage regulation circuit module 702 is connected to the input terminal of the second level conversion circuit module 704 .

具体地,所述电压调节电路模块702,包括:用于选择不同电阻值的电阻的选择单元以及至少两个不同电阻。Specifically, the voltage regulation circuit module 702 includes: a selection unit for selecting resistors with different resistance values and at least two different resistors.

具体地,所述电压调节电路模块702可以为用于分压的电流控制电路。Specifically, the voltage regulation circuit module 702 may be a current control circuit for voltage division.

通过电压调节电路模块利用预设的代码,分别调整接收到的栅极驱动信号,得到针对第一电平转换电路模块设置的第一栅极驱动信号,以及针对第二电平转换电路模块设置的第二栅极驱动信号,并将第一栅极驱动信号发送到第一电平转换电路模块,且将第二栅极驱动信号发送到第二电平转换电路模块,实现为不同的电平转换电路模块分别输入不同电压的栅极驱动信号,为每一电平转换电路模块提供该电平转换电路模块对应的栅极驱动信号,从而规避由工艺波动引起的TFT特性差异,实现了TFT的显示亮度相同,改善显示面板产生暗亮线现象,甚至避免显示面板产生暗亮线现象。The voltage adjustment circuit module uses the preset code to adjust the received gate drive signal respectively to obtain the first gate drive signal set for the first level conversion circuit module, and the first gate drive signal set for the second level conversion circuit module. The second gate drive signal, and the first gate drive signal is sent to the first level conversion circuit module, and the second gate drive signal is sent to the second level conversion circuit module to realize different level conversions The circuit modules respectively input gate drive signals of different voltages, and provide each level conversion circuit module with the gate drive signal corresponding to the level conversion circuit module, thereby avoiding the difference in TFT characteristics caused by process fluctuations and realizing the display of TFT The brightness is the same, improving the phenomenon of dark and bright lines on the display panel, and even avoiding the phenomenon of dark and bright lines on the display panel.

参见图8,本发明实施例一提供的电压调节电路模块702的栅极驱动的方法,该方法包括如下步骤:Referring to FIG. 8 , the method for driving the gate of the voltage regulation circuit module 702 provided by Embodiment 1 of the present invention includes the following steps:

S801、接收所述LDO电路模块发送的栅极驱动信号;S801. Receive a gate drive signal sent by the LDO circuit module;

S802、根据预设的针对第一电平转换电路模块对应的用于调整栅极驱动信号的电压的第一代码,调整接收到的栅极驱动信号的电压,得到第一栅极驱动信号,其中,所述第一代码为针对第一电平转换电路模块设置的;根据预设的针对第二电平转换电路模块对应的用于调整栅极驱动信号的电压的第二代码,调整接收到的栅极驱动信号的电压,得到第二栅极驱动信号,其中,所述第二代码为针对第二电平转换电路模块设置的;S802. According to the preset first code for adjusting the voltage of the gate drive signal corresponding to the first level conversion circuit module, adjust the voltage of the received gate drive signal to obtain the first gate drive signal, wherein , the first code is set for the first level conversion circuit module; according to the preset second code for adjusting the voltage of the gate drive signal corresponding to the second level conversion circuit module, adjust the received the voltage of the gate drive signal to obtain a second gate drive signal, wherein the second code is set for the second level conversion circuit module;

S803、将所述第一栅极驱动信号发送到所述第一电平转换电路模块,将所述第二栅极驱动信号发送到所述第二电平转换电路模块。S803. Send the first gate driving signal to the first level shifting circuit module, and send the second gate driving signal to the second level shifting circuit module.

参见图9,本发明实施例二提供了栅极驱动电路,包括电压生成电路模块401、电平转换电路模块以及电压调节网络模块。其中,电平转换电路模块的个数为两个,分别为第一电平转换电路模块703以及第二电平转换电路模块704;电压调节网络模块,包括:第一电压调节电路模块901以及第二电压调节电路模块902。其中,第一电压调节电路模块901以及第二电压调节电路模块902的输入端分别与电压生成电路模块401的输出端相连;Referring to FIG. 9 , Embodiment 2 of the present invention provides a gate drive circuit, including a voltage generation circuit module 401 , a level conversion circuit module, and a voltage regulation network module. Wherein, there are two level conversion circuit modules, which are the first level conversion circuit module 703 and the second level conversion circuit module 704; the voltage regulation network module includes: the first voltage regulation circuit module 901 and the second voltage regulation circuit module Two voltage regulation circuit modules 902 . Wherein, the input terminals of the first voltage regulating circuit module 901 and the second voltage regulating circuit module 902 are respectively connected to the output terminals of the voltage generating circuit module 401;

第一电压调节电路模块901的输出端与第一电平转换电路模块703的输入端相连,第二电压调节电路模块902的输出端与第二电平转换电路模块704的输入端相连。The output terminal of the first voltage regulation circuit module 901 is connected to the input terminal of the first level conversion circuit module 703 , and the output terminal of the second voltage regulation circuit module 902 is connected to the input terminal of the second level conversion circuit module 704 .

具体地,所述第一电压调节电路模块以及所述第二电压调节电路模块,包括:用于选择不同电阻值的电阻的选择单元以及至少两个不同电阻。Specifically, the first voltage regulation circuit module and the second voltage regulation circuit module include: a selection unit for selecting resistors with different resistance values and at least two different resistors.

具体地,所述电压调节电路模块702可以为用于分压的电流控制电路。Specifically, the voltage regulation circuit module 702 may be a current control circuit for voltage division.

由于第一电压调节电路模块的输入端与电压生成电路模块的输出端相连,第一电压调节电路模块的输出端与第一电平转换电路模块的输入端相连,因此,第一电压调节电路模块可通过预设的第一代码,调节电压生成电路模块发送的栅极驱动信号,得到第一栅极驱动信号,将第一栅极驱动信号发送给第一电平转换电路模块;相似的,第二电压调节电路模块的工作过程可参照第一电压调节电路模块,此处就不再赘述。Since the input terminal of the first voltage regulating circuit module is connected to the output terminal of the voltage generating circuit module, and the output terminal of the first voltage regulating circuit module is connected to the input terminal of the first level conversion circuit module, therefore, the first voltage regulating circuit module The gate drive signal sent by the voltage generation circuit module can be adjusted through the preset first code to obtain the first gate drive signal, and the first gate drive signal can be sent to the first level conversion circuit module; similarly, the first gate drive signal can be sent to the first level conversion circuit module; The working process of the second voltage regulating circuit module can refer to the first voltage regulating circuit module, and will not be repeated here.

通过本发明实施例二的工作过程,即可实现为每一电平转换电路模块提供该电平转换电路模块对应的栅极驱动信号,从而规避由工艺波动引起的TFT特性差异,实现了TFT的显示亮度相同,改善显示面板产生暗亮线现象,甚至避免显示面板产生暗亮线现象。Through the working process of the second embodiment of the present invention, it is possible to provide each level shifting circuit module with the gate drive signal corresponding to the level shifting circuit module, thereby avoiding the difference in TFT characteristics caused by process fluctuations and realizing the TFT The display brightness is the same, which improves the phenomenon of dark and bright lines on the display panel, and even avoids the phenomenon of dark and bright lines on the display panel.

参见图10,本发明实施例二提供的第一电压调节电路模块901的栅极驱动的方法,该方法包括如下步骤:Referring to FIG. 10 , the method for driving the gate of the first voltage regulation circuit module 901 provided by Embodiment 2 of the present invention includes the following steps:

S1001、接收所述电压生成电路模块生成的栅极驱动信号;S1001. Receive a gate drive signal generated by the voltage generating circuit module;

S1002、根据预设的针对第一电平转换电路模块对应的用于调整栅极驱动信号的电压的第一代码,调整接收到的栅极驱动信号的电压,得到第一栅极驱动信号,其中,所述第一代码为针对第一电平转换电路模块设置的;S1002. According to the preset first code for adjusting the voltage of the gate drive signal corresponding to the first level conversion circuit module, adjust the voltage of the received gate drive signal to obtain the first gate drive signal, wherein , the first code is set for the first level conversion circuit module;

S1003、将所述第一栅极驱动信号发送到第一电平转换电路模块。S1003. Send the first gate driving signal to a first level conversion circuit module.

相似的,第二电压调节电路模块902的栅极驱动的方法,可参照第一电压调节电路模块的栅极驱动的方法,此处就不再赘述。Similarly, the method for driving the gate of the second voltage regulating circuit module 902 can refer to the method for driving the gate of the first voltage regulating circuit module, which will not be repeated here.

具体地,本发明实施例中所述显示装置可以为液晶显示器或等离子体显示器。Specifically, the display device in the embodiment of the present invention may be a liquid crystal display or a plasma display.

综上所述,本发明提供的一种栅极驱动电路、显示面板及显示装置,用以通过增设的电压调节网络模块,为每一电平转换电路模块提供该电平转换电路模块对应的栅极驱动信号,从而规避由工艺波动引起的TFT特性差异,实现了TFT的显示亮度相同,改善显示面板产生暗亮线现象,甚至避免显示面板产生暗亮线现象。In summary, the present invention provides a gate drive circuit, a display panel, and a display device, which are used to provide each level shifting circuit module with a gate voltage corresponding to the level shifting circuit module through an additional voltage regulation network module. Pole driving signal, thereby avoiding the difference in TFT characteristics caused by process fluctuations, achieving the same display brightness of TFT, improving the phenomenon of dark and bright lines on the display panel, and even avoiding the phenomenon of dark and bright lines on the display panel.

显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies thereof, the present invention also intends to include these modifications and variations.

Claims (7)

1. a gate driver circuit, comprises voltage generation circuit module and at least two level shifting circuit modules, it is characterized in that, also comprise: voltage-regulation mixed-media network modules mixed-media;
The input end of described voltage-regulation mixed-media network modules mixed-media is connected with the output terminal of described voltage generation circuit module, and each output terminal of described voltage-regulation mixed-media network modules mixed-media is connected with the input end of this output terminal level shifting circuit module one to one respectively;
Described voltage-regulation mixed-media network modules mixed-media, specifically for:
Receive the gate drive signal of described voltage generation circuit CMOS macro cell;
According to the code of the voltage for adjusting gate drive signal preset, adjust the voltage of the gate drive signal received, obtain the gate drive signal that level shifting circuit module described in each is corresponding respectively, wherein, described code is for for level shifting circuit module installation described in each;
Gate drive signal described in each corresponding to level shifting circuit module is sent to respectively this level shifting circuit module.
2. gate driver circuit according to claim 1, is characterized in that, the number of described level shifting circuit module is two, is respectively the first level shifting circuit module and second electrical level change-over circuit module; Described voltage-regulation mixed-media network modules mixed-media, comprising: the low voltage difference for reducing the voltage of voltage signal falls output circuit module and voltage regulator circuit module;
Wherein, the input end that described low voltage difference falls output circuit module is connected with the output terminal of described voltage generation circuit module; The output terminal that described low voltage difference falls output circuit module is connected with the first input end of described voltage regulator circuit module; First output terminal of described voltage regulator circuit module is connected with the input end of the first level shifting circuit module, and the second output terminal of described voltage regulator circuit module is connected with the input end of second electrical level change-over circuit module;
Described voltage regulator circuit module, specifically for:
Receive the gate drive signal that described low voltage difference falls the transmission of output circuit module;
According to the first code of the voltage for adjust gate drive signal corresponding for the first level shifting circuit module preset, adjust the voltage of the gate drive signal received, obtain first grid drive singal, wherein, described first code is for the first level shifting circuit module installation;
According to the second code of the voltage for adjust gate drive signal corresponding for second electrical level change-over circuit module preset, adjust the voltage of the gate drive signal received, obtain second grid drive singal, wherein, described second code is for second electrical level change-over circuit module installation;
Described first grid drive singal is sent to described first level shifting circuit module, described second grid drive singal is sent to described second electrical level change-over circuit module.
3. gate driver circuit according to claim 1, is characterized in that, the number of described level shifting circuit module is two, is respectively the first level shifting circuit module and second electrical level change-over circuit module; Described voltage-regulation mixed-media network modules mixed-media, comprising: the first voltage regulator circuit module and the second voltage regulator circuit module;
Wherein, the input end of the first voltage regulator circuit module and the input end of the second voltage regulator circuit module are connected with the output terminal of described voltage generation circuit module respectively;
The output terminal of the first voltage regulator circuit module is connected with the input end of the first level shifting circuit module, and the output terminal of the second voltage regulator circuit module is connected with the input end of second electrical level change-over circuit module;
Described first voltage regulator circuit module, specifically for:
Receive the gate drive signal of described voltage generation circuit CMOS macro cell;
According to the first code of the voltage for adjust gate drive signal corresponding for the first level shifting circuit module preset, adjust the voltage of the gate drive signal received, obtain first grid drive singal, wherein, described first code is for the first level shifting circuit module installation;
Described first grid drive singal is sent to the first level shifting circuit module;
Described second voltage regulator circuit module, specifically for:
Receive the gate drive signal of described voltage generation circuit CMOS macro cell;
According to the second code of the voltage for adjust gate drive signal corresponding for second electrical level change-over circuit module preset, adjust the voltage of the gate drive signal received, obtain second grid drive singal, wherein, described second code is for second electrical level change-over circuit module installation;
Described second grid drive singal is sent to second electrical level change-over circuit module.
4. the gate driver circuit according to Claims 2 or 3, is characterized in that, described voltage regulator circuit module comprises: for the different resistance of selection unit and at least two selecting the resistance of different resistance values.
5. a display panel, it is characterized in that, comprise the gate driver circuit described in any one of claim 1-4 and at least two face inner grid circuit modules, wherein, the level shifting circuit module in the described gate driver circuit that described in each, the input end of face inner grid circuit module is corresponding with this face inner grid circuit module is connected.
6. display panel according to claim 5, is characterized in that, the number of described level shifting circuit module is two, is respectively the first level shifting circuit module and second electrical level change-over circuit module; The number of described inner grid circuit module is two, is respectively first surface inner grid circuit module and second inner grid circuit module;
Wherein, the output terminal of described first level shifting circuit module is connected with the input end of described first surface inner grid circuit module, and the output terminal of described second electrical level change-over circuit module is connected with the input end of described second inner grid circuit module;
Described first surface inner grid circuit module, specifically for:
Receive the first grid drive singal that described first level shifting circuit module sends;
According to first grid drive singal, drive the thin film transistor (TFT) corresponding to first surface inner grid circuit module;
Described second inner grid circuit module, specifically for:
Receive the second grid drive singal that described second electrical level change-over circuit module sends;
According to second grid drive singal, drive the thin film transistor (TFT) corresponding to second inner grid circuit module.
7. a display device, is characterized in that, comprises the display panel described in claim 5 or 6.
CN201410850569.7A 2014-12-30 2014-12-30 Gate driver circuit, display floater and display device Expired - Fee Related CN104485078B (en)

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CN113345361A (en) * 2021-05-20 2021-09-03 惠科股份有限公司 Driving circuit, driving method and display device
CN114648943A (en) * 2020-12-21 2022-06-21 京东方科技集团股份有限公司 Level conversion circuit, display substrate and display panel

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CN110322853A (en) * 2019-06-19 2019-10-11 电子科技大学 A kind of intelligent display drive system neural network based
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