WO2020073468A1 - 一种显示装置及其消除关机残影方法 - Google Patents

一种显示装置及其消除关机残影方法 Download PDF

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Publication number
WO2020073468A1
WO2020073468A1 PCT/CN2018/119811 CN2018119811W WO2020073468A1 WO 2020073468 A1 WO2020073468 A1 WO 2020073468A1 CN 2018119811 W CN2018119811 W CN 2018119811W WO 2020073468 A1 WO2020073468 A1 WO 2020073468A1
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Prior art keywords
circuit
reference voltage
gamma
voltage
control
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PCT/CN2018/119811
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English (en)
French (fr)
Inventor
王明良
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惠科股份有限公司
重庆惠科金渝光电科技有限公司
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Publication of WO2020073468A1 publication Critical patent/WO2020073468A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0252—Improving the response speed
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve

Definitions

  • the present application relates to the technical field of screen display control, and in particular, to a display device and a method for eliminating shutdown residual image.
  • Liquid crystal display has been widely used recently. With the improvement of driving technology, it has the advantages of low power consumption, thin and light weight, low voltage drive, etc. It has been widely used in video recording and playback Projectors, laptops, desktop monitors and various projection equipment.
  • the liquid crystal display device usually has a gate driving circuit, a source driving circuit and a pixel array.
  • the pixel array has a plurality of pixel circuits, and each pixel circuit is turned on and off according to the scanning signal provided by the gate driving circuit, and displays the data screen according to the data signal provided by the source driving circuit.
  • An object of the present application is to provide a display device, including but not limited to reducing electric charge remaining on a liquid crystal panel during shutdown, and eliminating residual image left by human eyes after shutdown.
  • a display device including:
  • a gamma voltage generating circuit connected to the display panel through a plurality of gamma voltage lines;
  • a voltage regulating circuit connected to the display panel through a reference voltage line;
  • a power supply circuit transmitting control signals to the control circuit
  • a control circuit a control end of the control circuit is connected to the power supply circuit to obtain the control signal, a first end of the control circuit is connected to the reference voltage line, and a second end of the control circuit is connected to the multiple A gamma voltage line; wherein, when the control circuit obtains the control signal at the first potential, the control circuit switches the line state to short-circuit the first end and the second end, so that the reference voltage Forming a short circuit between the line and the plurality of gamma voltage lines to reduce the voltage difference between the reference voltage line and the plurality of gamma voltage lines; the control circuit obtains the control signal as the second potential At this time, the control circuit switches the line state to form an open circuit between the first end and the second end, and disconnects the reference voltage line and the plurality of gamma voltage lines.
  • the display device further includes:
  • a reference voltage generating circuit is configured to provide a reference voltage to the gamma voltage generating circuit and the voltage adjusting circuit.
  • the gamma voltage generating circuit is further configured to generate a plurality of gamma reference voltages according to the reference voltage, and the reference voltage generating circuit is connected to the gamma voltage generating circuit.
  • control circuit is an active switch
  • control end of the active switch is connected to the power supply circuit
  • first end of the active switch is connected to the reference voltage line
  • second end of the active switch Connect the plurality of gamma voltage lines.
  • the gamma voltage line includes a gray scale control line and a black picture control line.
  • the active switch when the control signal is at the first potential, causes the active switch to short-circuit the reference voltage line and the plurality of gamma voltage lines, and the control signal is the first At two potentials, the active switch opens the reference voltage line and the plurality of gamma voltage lines.
  • the active switch is a metal oxide semiconductor field effect transistor. In some embodiments, it refers to a P-type metal oxide semiconductor field effect transistor.
  • a reference voltage generating circuit is further connected to the gamma voltage generating circuit, and the gamma voltage generating circuit generates a gamma reference voltage to the display panel according to the reference voltage.
  • the second end of the control circuit is connected to a gray-scale control line among the plurality of gamma voltage lines.
  • the display device further includes:
  • the gate driving circuit is connected to a plurality of gate lines, and the power supply circuit outputs the control signal to the gate driving circuit, and the gate driving circuit simultaneously provides scan signals to the plurality of gate lines.
  • the gamma voltage generating circuit, the voltage regulating circuit and the control circuit are integrated in a gamma voltage chip.
  • the gamma voltage generating circuit and the voltage regulating circuit are integrated into a gamma voltage chip.
  • the output line of the gamma voltage chip includes the reference voltage line and the plurality of gamma voltage lines, and the control circuit connects the reference voltage line and the plurality of gamma voltage lines between.
  • the voltage regulating circuit provides a reference voltage, and when the reference voltage line is short-circuited with the plurality of gamma voltage lines, the voltage difference between the gamma reference voltage and the reference voltage is 0.
  • the gamma voltage generating circuit provides a control voltage corresponding to the black picture control line to the display panel, and the display panel presents a black picture.
  • the display panel is a curved display panel.
  • Another object of the present application is to provide a display device, including:
  • a gate driving circuit connecting a plurality of gate lines and the power supply circuit, and the gate driving circuit obtains the control signal
  • the gamma voltage generating circuit includes a plurality of gamma voltage lines, and the gamma voltage generating circuit outputs a gamma reference voltage to the display panel through the plurality of gamma voltage lines;
  • a voltage regulating circuit including a reference voltage line, and the voltage regulating circuit outputs a reference voltage to the display panel through the reference voltage line;
  • An active switch a control end of the active switch is connected to the power supply circuit, a first end of the active switch is connected to the reference voltage line, and a second end of the active switch is connected to the plurality of gamma voltage lines,
  • the active switch obtains the control signal from the control terminal; wherein, when the gate drive circuit obtains the control signal at the second potential, the scanning signal is sequentially provided to the plurality of gate lines, and the active switch obtains When the control signal is at the second potential, the active switch is turned off, and the reference voltage line and the plurality of gamma voltage lines are disconnected; the gate drive circuit obtains the control signal as At the first potential, scan signals are simultaneously provided to the plurality of gate lines.
  • the active switch obtains the control signal at the first potential, the active switch is turned on, and the first end and the second end are Short circuit to short-circuit the reference voltage line and the plurality of gamma voltage lines.
  • a further object of the present application is to provide a method for eliminating the afterimage of shutdown of a display device, including:
  • Control signals are transmitted through the power circuit
  • the control circuit When the control circuit is at the first potential according to the control signal, the reference voltage circuit and the plurality of gamma voltage circuits are short-circuited, wherein the gamma voltage circuit includes a gray scale control circuit and a black screen control circuit.
  • the method for eliminating shutdown residual image further includes:
  • a reference voltage is supplied to the gamma voltage generating circuit and the voltage adjusting circuit through a reference voltage generating circuit.
  • the method for eliminating shutdown residual image further includes:
  • a plurality of gate lines are connected through a gate driving circuit, wherein the power supply circuit outputs the control signal to the gate driving circuit, and the gate driving circuit simultaneously provides scan signals to the plurality of gate lines.
  • the method for eliminating shutdown residual image further includes:
  • the display panel When the gamma voltage generating circuit provides a control voltage corresponding to the black picture control line to the display panel, the display panel presents a black picture.
  • the method for eliminating shutdown residual image further includes:
  • the second end of the control circuit is connected to the gray scale control line among the plurality of gamma voltage lines.
  • a display device and a method for eliminating shutdown afterimages provided by the embodiments of the present application, by adjusting the line between the gamma reference voltage and the reference voltage, so that the gamma reference voltage and the reference voltage are the same voltage during shutdown
  • the residual image of the shutdown is eliminated from the screen display, thereby improving the quality of the displayed screen.
  • FIG. 1 is a schematic diagram of a liquid crystal display panel formed by a liquid crystal display pixel array provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of equivalent capacitive loads related to liquid crystal display pixels and related switch components in an LCD panel provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of equivalent capacitive loads of related liquid crystal display pixels and related switch components in another liquid crystal display panel provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of the operation of a gate driving chip provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a display device provided by an embodiment of the present application.
  • 6a is a schematic diagram of another display device provided by an embodiment of the present application.
  • FIG. 6b is a schematic diagram of another display device provided by an embodiment of the present application.
  • FIG. 7a is a schematic diagram of another display device provided by an embodiment of the present application.
  • FIG. 7b is a schematic diagram of another display device provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of another display device provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a process of eliminating a residual image of a shutdown device provided by an embodiment of the present application.
  • FIG. 1 is a schematic diagram of a liquid crystal display panel formed by a liquid crystal display pixel array provided by an embodiment of the present application.
  • a liquid crystal display panel 10 includes a display module 20 composed of a plurality of pixels 22 arranged in a two-dimensional array. These pixels 22 are controlled and driven by a plurality of data lines D1, D2 ... Dn and a plurality of gate lines G1, G2 ... Gm.
  • the data signal of each data line is provided by a source driver chip (Source Driver) 30 and the gate signal of each gate line is provided by a gate driver chip (Gate Driver) 40.
  • each pixel 22 or 22 ' is associated with a plurality of capacitors, for example, a capacitor Clc formed by a liquid crystal layer capacitor located between the upper and lower electrodes and associated with it, and a gate capacitor after the signal passing
  • the additional charge storage capacitor Cst that maintains the voltage at the Vpixel value, and the capacitor Cgs associated with the gate terminal and source terminal of the switching element (an active switch, TFT).
  • the total pixel capacitance of a liquid crystal display panel may vary due to the pixel size, the thickness of the liquid crystal layer, the size of the storage capacitor, and several other techniques familiar to those skilled in the art.
  • both Clc and Cst are connected to a reference voltage Vcom.
  • Cst is connected to a gate line.
  • a general method is to generate a control signal when the power is turned off, so that the gate driving circuit 40 simultaneously turns on the TFT switches of all channels, hoping to let the charge be discharged as soon as possible.
  • the output is uncertain, so the effect of the discharge will vary with the data displayed on the screen, so this method does not guarantee the complete elimination of the residual charge.
  • the display panel of the present application may include an active film (TFT) substrate, a color filter (CF) substrate, and a liquid crystal layer formed between the two substrates.
  • TFT active film
  • CF color filter
  • the display panel in this embodiment may be a curved display panel.
  • the active array (TFT) and the color filter layer (CF) in this embodiment may be formed on the same substrate.
  • FIG. 5 is a schematic diagram of a display device provided by an embodiment of the present application.
  • a display device includes:
  • the gamma voltage generating circuit 120 is connected to the display panel 10 through a plurality of gamma voltage lines 121;
  • the voltage adjustment circuit 130 is connected to the display panel through a reference voltage line 131;
  • the power circuit 150 is set to transmit the control signal 151;
  • Control circuit 140 the control terminal of the control circuit is connected to the power circuit to obtain the control signal, the first terminal of the control circuit 140 is connected to the reference voltage line 131, the second terminal of the control circuit 140 End is connected to the plurality of gamma voltage lines 121; wherein, when the control circuit 140 obtains the control signal 151 as the first potential, the control circuit 140 switches the line state so that the first end and the second Forming a short circuit at the terminal to short-circuit the reference voltage line 131 and the plurality of gamma voltage lines 121 to reduce the voltage difference between the reference voltage line 131 and the plurality of gamma voltage lines 121; When the control circuit 140 obtains that the control signal is at the second potential, the control circuit 140 switches the line state to form an open circuit between the first end and the second end, so that the reference voltage line 131 and the multiple The two gamma voltage lines 121 are disconnected.
  • the display device further includes:
  • the reference voltage generating circuit 110 is configured to provide a reference voltage to the gamma voltage generating circuit 120 and the voltage adjusting circuit 130.
  • the reference voltage generating circuit 110 provides a reference voltage to the gamma voltage generating circuit 120 and the voltage adjusting circuit 130, respectively.
  • the gamma voltage generating circuit 120 generates a plurality of gamma reference voltages (gamma) according to the reference voltage, and the plurality of gamma reference voltages are output to the display through a plurality of gamma voltage lines 121 Panel 10.
  • the plurality of gamma reference voltages gamma generate a reference voltage VCOM according to the reference voltage, and the reference voltage VCOM is output to the display panel 10 through the reference voltage line 131.
  • the voltage difference across the liquid crystal corresponding to each pixel 22 is the deviation of the gamma reference voltage gamma from the reference voltage VCOM.
  • the power circuit 150 provides a control signal 151 (such as an XAO signal) to the control circuit 140 during the shutdown operation.
  • the control signal 151 has at least two potential states, such as a first potential and a second potential.
  • the control circuit 140 short-circuits the reference voltage line 131 and the plurality of gamma voltage lines 121, and when the control signal 151 is at the second potential, the The control circuit 140 disconnects the reference voltage line 131 and the plurality of gamma voltage lines 121.
  • 6a is a schematic diagram of another display device provided by an embodiment of the present application.
  • the control circuit 140 is an active switch 141, and a control terminal of the active switch 141 is connected to the power circuit 150.
  • the first end and the second end of the active switch 141 are respectively connected to the plurality of gamma voltage lines 121 and the reference voltage line 131.
  • an active switch 141 is provided between each gamma voltage line 121 and the reference voltage line 131.
  • FIG. 6b is a schematic diagram of another display device provided by an embodiment of the present application.
  • the control circuit 140 is an active switch 141, and the active switch 141 is connected to the power circuit 150, the plurality of gamma voltage lines 121 and the Between the reference voltage lines 131, only one active switch 141 is connected to all the gamma voltage lines 121.
  • the active switch 141 is, for example, a thin film transistor, which is not limited herein.
  • the active switch 141 is, for example, a metal oxide semiconductor field effect transistor, and in some embodiments, it refers to a P-type metal oxide semiconductor field effect transistor.
  • the control signal 151 is at a high potential, the first end and the second end of the active switch 141 are not conductive, and the plurality of gamma voltage lines 121 and the reference voltage line 131 are disconnected.
  • the control signal 151 is at a low potential, the first end and the second end of the active switch 141 are turned on, and the plurality of gamma voltage lines 121 and the reference voltage line 131 are short-circuited.
  • the gamma voltage generating circuit 120 provides a gamma reference voltage
  • the voltage adjusting circuit 130 provides a reference voltage
  • the reference voltage line 131 is short-circuited with the plurality of gamma voltage lines 121
  • the voltage difference between the gamma reference voltage and the reference voltage is 0, so that the voltage difference across the liquid crystal corresponding to each pixel 22 is 0, the liquid crystal stops deflecting, and the screen of the display panel becomes black immediately Eliminated the afterimage of shutdown.
  • the plurality of gamma voltage lines 121 include gray scale control lines and black picture control lines.
  • the second end of the control circuit 140 is connected to the gray-scale control line.
  • the reference voltage line 131 when the control signal 151 is at the second potential, the reference voltage line 131 is short-circuited with the gray-scale control line.
  • the voltage difference between the gamma reference voltage and the reference voltage on the gray scale control line is 0, and the voltage difference across the liquid crystal corresponding to the pixel 22 paired with the gray scale control line is 0. Stop biasing.
  • the black picture control line in the plurality of gamma voltage lines 121 maintains the path.
  • the gamma voltage generating circuit 120 provides a control voltage corresponding to the black picture control line 121b to the display panel 10, and the display panel 10 presents a black picture.
  • FIG. 7a is a schematic diagram of another display device provided by an embodiment of the present application.
  • the gamma voltage generating circuit 120, the voltage adjusting circuit 130, and the control circuit 140 are integrated in a gamma voltage chip 170.
  • FIG. 7b is a schematic diagram of another display device provided by an embodiment of the present application.
  • the gamma voltage generating circuit 120 and the voltage adjusting circuit 130 are integrated in a gamma voltage chip 170, and the output circuit of the gamma voltage chip 170 includes all The reference voltage line 131 and the plurality of gamma voltage lines 121.
  • the control circuit 140 connects the reference voltage line 131 and the plurality of gamma voltage lines 121.
  • FIG. 8 is a schematic diagram of another display device provided by an embodiment of the present application. Please cooperate with FIG. 1 and FIG. 7b to facilitate understanding.
  • the display device further includes:
  • the power supply circuit 150 is connected to the gate drive circuit 40, the gate drive circuit 40 is connected to a plurality of gate lines, the power supply circuit 150 outputs the control signal 151 to the gate drive circuit 40, the gate The driving circuit 40 simultaneously provides scan signals to the plurality of gate lines.
  • connection between the aforementioned elements, lines, and signals includes, but is not limited to, direct connection, indirect connection, electrical coupling, and the like.
  • the output line of the gamma voltage chip includes the reference voltage line and the plurality of gamma voltage lines, and the control circuit connects the reference voltage line and the plurality of gamma voltage lines between.
  • the gamma voltage generating circuit 120 provides a gamma reference voltage
  • the voltage adjusting circuit 130 provides a reference voltage.
  • the reference voltage line is short-circuited with the plurality of gamma voltage lines, the The voltage difference between the gamma reference voltage and the reference voltage is zero.
  • the power supply circuit 150 is connected to the gate drive circuit 40, the gate drive circuit 40 is connected to a plurality of gate lines, and the power supply circuit 150 outputs the control signal to the gate drive circuit 40 ,
  • the gate driving circuit 40 simultaneously provides scan signals to the plurality of gate lines.
  • the display device in this embodiment includes:
  • the power circuit 150 transmits the control signal 151;
  • the gate driving circuit 40 connects a plurality of gate lines arranged on the display panel 10 and the power supply circuit 150, and the gate driving circuit 40 obtains the control signal 151;
  • the gamma voltage generating circuit 120 includes a plurality of gamma voltage lines 121, and the gamma voltage generating circuit 120 outputs a gamma reference voltage to the display panel 10 through the plurality of gamma voltage lines 121;
  • the voltage adjustment circuit 130 includes a reference voltage line 131, and the voltage adjustment circuit 130 outputs a reference voltage to the display panel 10 through the reference voltage line 131;
  • An active switch 141 a control end of the active switch 141 is connected to the power circuit 150, a first end of the active switch 141 is connected to the reference voltage line 131, and a second end of the active switch 141 is connected to the multiple A gamma voltage line 121, the active switch 141 obtains the control signal 151 from the control terminal; wherein, when the gate drive circuit 40 obtains the control signal 151 at the second potential, the plurality of gates The line sequentially provides a scan signal.
  • the active switch 141 obtains the control signal 151 at the second potential, the active switch 141 is turned off, so that the reference voltage line 131 and the plurality of gamma voltage lines 121 Disconnect
  • the gate driving circuit 40 When the gate driving circuit 40 obtains the control signal 151 at the first potential, it simultaneously provides scan signals to the plurality of gate lines.
  • the active switch 141 obtains the control signal 151 at the first potential, the The active switch 141 is open, and the first end and the second end are short-circuited to short the reference voltage line 131 and the plurality of gamma voltage lines 121.
  • a method for eliminating shutdown afterimages includes:
  • the gamma reference voltage is provided to the display panel 10 through the gamma voltage generating circuit 120, and the gamma reference voltage is output by the plurality of gamma voltage lines 121 of the gamma voltage generating circuit 120.
  • a reference voltage is provided to the display panel 10 through the voltage adjustment circuit 130, and the reference voltage is output by the reference voltage line 131 of the voltage adjustment circuit 130.
  • the control signal 151 is transmitted through the power circuit 150.
  • the control signal 151 is obtained through the control circuit 140, and the reference voltage line 131 and the plurality of gamma voltage lines 121 are short-circuited according to the control signal 151 being the first potential, wherein the gamma voltage line Including gray scale control circuit and black picture control circuit.
  • the method for eliminating the afterimage of shutdown further includes:
  • the reference voltage is provided to the gamma voltage generating circuit 120 and the voltage adjusting circuit 130 through the reference voltage generating circuit 110.
  • the method for eliminating the afterimage of shutdown further includes:
  • a plurality of gate lines are connected through the gate driving circuit 40, wherein the power supply circuit 150 outputs the control signal to the gate driving circuit 40, and the gate driving circuit 40 simultaneously processes the plurality of gate lines Provide scan signal.
  • the method for eliminating shutdown residual image further includes:
  • the voltage difference between the gamma reference voltage and the reference voltage is set to 0.
  • the method for eliminating shutdown residual image further includes:
  • the display panel 10 When the gamma voltage generating circuit 120 provides a control voltage corresponding to the black picture control line to the display panel 10, the display panel 10 presents a black picture.
  • the method for eliminating shutdown residual image further includes:
  • the second end of the control circuit 140 is connected to the gray-scale control line among the plurality of gamma voltage lines.

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  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
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Abstract

一种显示装置及其消除关机残影方法，包括：显示面板（10）、伽马电压产生电路（120）、电压调节电路（130）、电源电路（150）以及控制电路（140），控制电路（140）取得控制信号（151）为第一电位时，控制电路（140）切换线路状态使第一端与第二端形成短路；控制电路（140）取得控制信号（151）为第二电位时，控制电路（140）切换线路状态使第一端与第二端形成开路。

Description

一种显示装置及其消除关机残影方法
本申请要求于2018年10月10日提交中国专利局，申请号为201811179136.8，发明名称为“一种显示装置及其消除关机残影方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及一种画面显示控制技术领域，尤其涉及一种显示装置及其消除关机残影方法。
背景技术
这里的陈述仅提供与本申请有关的背景信息，而不必然的构成现有技术。液晶显示器(Liquid Crystal Display,LCD)近来已被广泛的运用，随着驱动技术的改良，使其具有低的消耗电功率、薄型量轻、低电压驱动等优点，目前已经广泛的应用在摄录放影机、笔记本电脑、桌上型显示器及各种投影设备上。且液晶显示装置中通常具有栅极驱动电路、源极驱动电路和像素阵列。像素阵列中具有多个像素电路，每一个像素电路依据栅极驱动电路提供的扫描讯号开启和关闭，并依据源极驱动电路提供的数据讯号，显示数据画面。
因为受液晶充放电速度的限制，在关机时有可能液晶面板会残留一些电荷，可能会造成人眼看到关机残影。目前常见的做法是关机时会产生一个控制信号，使第二驱动芯片(Gate Driver)同时打开所有通道的TFT开关，希望让电荷尽快的去放掉，可是这时由于第一驱动芯片(Data Driver)的输出是不确定的，因此放电的效果会随着画面显示数据的不同而有所差异，所以这个方法并不能保证完全消除残存电荷，因此，如何改善上述惯用第二驱动芯片(Gate Driver)对液晶面板进行放电时的技术缺失，因而提出一种制作成本低且加工容易的消除关机残影方法。
申请内容
本申请一目的在于提供一种显示装置，包括但不限于实现减少关机时液晶面板会残留的电荷，以及消除人眼看到的关机残影。
为了实现上述目的，本申请实施例采用的技术方案是：
一种显示装置，包括：
显示面板；
伽马电压产生电路，通过多个伽马电压线路连接所述显示面板；
电压调节电路，通过基准电压线路连接所述显示面板；
电源电路，传输控制信号至所述控制电路；
控制电路，所述控制电路的控制端连接于所述电源电路以取得所述控制信号，所述控制电路的第一端连接所述基准电压线路，所述控制电路的第二端连接所述多个伽马电压线路；其中，所述控制电路取得所述控制信号为第一电位时，所述控制电路切换线路状态使所述第一端与所述第二端形成短路，使所述基准电压线路与所述多个伽马电压线路之间形成短接，缩小所述基准电压线路与所述多个伽马电压线路之间的压差；所述控制电路取得所述控制信号为第二电位时，所述控制电路切换线路状态使所述第一端与所述第二端形成开路，使所述基准电压线路与所述多个伽马电压线路之间为断开。
在一个实施例中，所述显示装置还包括：
参考电压产生电路，设置为向所述伽马电压产生电路和所述电压调节电路提供参考电压。
在一个实施例中，所述伽马电压产生电路，还设置为根据所述参考电压生成多个伽马参考电压，所述参考电压产生电路连接所述伽马电压产生电路。
在一个实施例中，所述控制电路为主动开关，所述主动开关的控制端连接所述电源电路，所述主动开关的第一端连接所述基准电压线路，所述主动开关的第二端连接所述多个伽马电压线路。
在一个实施例中，所述伽马电压线路包括灰阶控制线路和黑画面控制线路。
在一个实施例中，所述控制信号为第一电位时，所述主动开关使所述主动开关使所述基准电压线路与所述多个伽马电压线路为短接，所述控制信号为第二电位时，所述主动开关使所述基准电压线路与所述多个伽马电压线路为开路。
在一个实施例中，所述主动开关为金属氧化物半导体场效应晶体管，在一些实施例中，是指P型金属氧化物半导体场效应晶体管。
在一个实施例中，还包括参考电压产生电路连接所述伽马电压产生电路，所述伽马电压产生电路依据所述参考电压产生伽马参考电压至所述显示面板。
在一个实施例中，所述控制电路的第二端连接所述多个伽马电压线路中的灰阶控制线路。
在一个实施例中，所述显示装置还包括：
栅极驱动电路；
所述栅极驱动电路连接多个栅极线，所述电源电路输出所述控制信号至所述栅极驱动电路，所述栅极驱动电路对所述多个栅极线同时提供扫描信号。
在一个实施例中，所述伽马电压产生电路、所述电压调节电路与所述控制电路整合于 伽马电压芯片。
在一个实施例中，所述伽马电压产生电路与所述电压调节电路整合于伽马电压芯片。在一个实施例中，所述伽马电压芯片的输出线路包括所述基准电压线路与所述多个伽马电压线路，所述控制电路连接所述基准电压线路与所述多个伽马电压线路之间。
在一个实施例中，所述电压调节电路提供基准电压，所述基准电压线路与所述多个伽马电压线路短接时，所述伽马参考电压与所述基准电压之间的压差为0。
在一个实施例中，所述伽马电压产生电路提供对应所述黑画面控制线路的控制电压至所述显示面板，所述显示面板呈现黑画面。
在一个实施例中，所述显示面板为曲面型显示面板。
本申请的另一目的在于提供一种显示装置，包括：
显示面板；
电源电路，传输控制信号；
栅极驱动电路，连接多个栅极线与所述电源电路，所述栅极驱动电路取得所述控制信号；
伽马电压产生电路，包括多个伽马电压线路，所述伽马电压产生电路通过所述多个伽马电压线路输出伽马参考电压至所述显示面板；
电压调节电路，包括基准电压线路，所述电压调节电路通过所述基准电压线路输出基准电压至所述显示面板；
主动开关，所述主动开关的控制端连接于所述电源电路，所述主动开关的第一端连接所述基准电压线路，所述主动开关的第二端连接所述多个伽马电压线路，所述主动开关自控制端取得所述控制信号；其中，所述栅极驱动电路取得所述控制信号为第二电位时，对所述多个栅极线逐次提供扫描信号，所述主动开关取得所述控制信号为第二电位时，所述主动开关为关闭，使所述基准电压线路与所述多个伽马电压线路之间为断开；所述栅极驱动电路取得所述控制信号为第一电位时，对所述多个栅极线同时提供扫描信号，所述主动开关取得所述控制信号为第一电位时，所述主动开关为打开，所述第一端与第二端为短路，以使所述基准电压线路与所述多个伽马电压线路形成短接。
本申请的再一目的在于提供一种显示装置的消除关机残影方法，包括：
通过伽马电压产生电路提供伽马参考电压至显示面板，所述伽马参考电压由所述伽马电压产生电路的多个伽马电压线路输出至所述显示面板；
通过电压调节电路提供基准电压，所述基准电压由所述电压调节电路的基准电压线路输出；
通过电源电路传输控制信号；
通过控制电路依据所述控制信号为第一电位时，短接所述基准电压线路与所述多个伽马电压线路，其中，所述伽马电压线路包括灰阶控制线路与黑画面控制线路。
在一个实施例中，所述消除关机残影方法还包括：
通过参考电压产生电路向所述伽马电压产生电路和所述电压调节电路提供参考电压。
在一个实施例中，所述消除关机残影方法还包括：
通过栅极驱动电路连接多个栅极线，其中，所述电源电路输出所述控制信号至所述栅极驱动电路，所述栅极驱动电路对所述多个栅极线同时提供扫描信号。
在一个实施例中，所述消除关机残影方法还包括：
当所述伽马电压产生电路提供对应所述黑画面控制线路的控制电压至所述显示面板，所述显示面板呈现黑画面。
在一个实施例中，所述消除关机残影方法还包括：
将所述控制电路的第二端连接所述多个伽马电压线路中的灰阶控制线路。
本申请实施例提供的一种显示装置及其消除关机残影方法，通过调整伽马参考电压与基准电压之间线路，使关机时，伽马参考电压与基准电压为相同电压，如此显示面板的液晶即因无压差而停止作用而无法显示画面，从画面显示上消除关机残影，因而提升显示画面质量。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的由液晶显示像素阵列形成的液晶显示面板示意图。
图2为本申请实施例提供的一种液晶显示面板内液晶显示像素相关以及相关的开关组件的等效电容负载示意图。
图3为本申请实施例提供的另一种液晶显示面板内液晶显示像素相关以及相关的开关组件的等效电容负载示意图。
图4为本申请实施例提供的一种栅极驱动芯片的工作示意图。
图5为本申请实施例提供的一种显示装置示意图。
图6a为本申请实施例提供的另一种显示装置的示意图。
图6b为本申请实施例提供的另一种显示装置的示意图。
图7a为本申请实施例提供的另一种显示装置的示意图。
图7b为本申请实施例提供的另一种显示装置的示意图。
图8为本申请实施例提供的另一种显示装置的示意图。
图9为本申请实施例提供的显示装置的消除关机残影流程示意图。
本申请的实施方式
为了使本技术领域的人员更好地理解本申请方案，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述，显然，所描述的实施例是本申请一部分的实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本申请保护的范围。
本申请的说明书和权利要求书及上述附图中的术语“包括”以及它们任何变形，意图在于覆盖不排他的包含。例如包含一系列步骤或单元的过程、方法或***、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。此外，术语“第一”、“第二”和“第三”等是用于区别不同对象，而非用于描述特定顺序。
图1为本申请实施例提供的由液晶显示像素阵列形成的液晶显示面板示意图。
请参照图1，一种液晶显示面板10包括有一个排列成二维阵列的多个像素22组成的显示模块20。这些像素22由多条数据线D1、D2...Dn以及多条栅极线G1、G2...Gm所控制及驱动。每一条数据线的数据讯号是由一源极驱动芯片(Source Driver)30所提供以及每一条栅极线的栅极讯号由一栅极驱动芯片(Gate Driver)40所提供。
参照图2至图4，每一像素22或22’是与多个电容相关，例如，一个位于上下层电极间的液晶层电容所形成并与其相关的电容Clc、一个位于栅极线讯号通过后维持电压在Vpixel值的额外的电荷储存电容Cst，以及与开关组件(一主动开关，TFT)的栅极端以及源极端相关的电容Cgs。一个液晶显示面板的像素总电容值可能会因为像素大小、液晶层的厚度、储存电容器的大小以及其他数种熟悉此技艺者所熟知的技术的影响而产生变化。如第2图，Clc以及Cst均连接到一基准电压Vcom。如第3图，Cst是连接到一条栅极线。
然而，液晶充放电速度的限制，在关机时有可能液晶面板会残留一些电荷，造成人眼看到关机残影。如图4所示，一般做法是关机时会产生一个控制信号，使栅极驱动电路40同时打开所有通道的TFT开关，希望让电荷尽快的去放掉，可是这时由于源极驱动单元30的输出是不确定的，因此放电的效果会随着画面显示数据的不同而有所差异，所以这个方法并不能保证完全消除残存电荷。
本申请的显示面板可包括主动阵列(thin film transistor，TFT)基板、彩色滤光层(color filter，CF)基板与形成于两基板之间的液晶层。
在一个实施例中，本实施例中的显示面板可为曲面型显示面板。
在一个实施例中，本实施例中的主动阵列(TFT)及彩色滤光层(CF)可形成于同一基板上。
图5为本申请实施例提供的一种显示装置示意图。
如图5所示，在本申请的一实施例中，一种显示装置包括：
显示面板10；
伽马电压产生电路120，通过多个伽马电压线路121连接所述显示面板10；
电压调节电路130，通过基准电压线路131连接所述显示面板；
电源电路150，设置为传输控制信号151；
控制电路140，所述控制电路的控制端连接于所述电源电路以取得所述控制信号，所述控制电路140的第一端连接于所述基准电压线路131，所述控制电路140的第二端连接所述多个伽马电压线路121；其中，所述控制电路140取得所述控制信号151为第一电位时，所述控制电路140切换线路状态使所述第一端与所述第二端形成短路，使所述基准电压线路131与所述多个伽马电压线路121之间形成短接，缩小所述基准电压线路131与所述多个伽马电压线路121之间的压差；所述控制电路140取得所述控制信号为第二电位时，所述控制电路140切换线路状态使所述第一端与所述第二端形成开路，使所述基准电压线路131与所述多个伽马电压线路121之间为断开。
在一个实施例中，所述显示装置还包括：
参考电压产生电路110，设置为向所述伽马电压产生电路120和所述电压调节电路130提供参考电压。
在一个实施例中，参考电压产生电路110分别提供参考电压至所述伽马电压产生电路120与电压调节电路130。
在一个实施例中，所述伽马电压产生电路120依据所述参考电压产生多个伽马参考电压(gamma)，所述多个伽马参考电压通过多数个伽马电压线路121被输出至显示面板10。所述多个伽马参考电压gamma依据所述参考电压产生基准电压VCOM，所述基准电压VCOM通过基准电压线路131被输出至显示面板10。每一像素22所对应液晶两端的压差就是伽马参考电压gamma与基准电压VCOM的偏差。
所述电源电路150会在进行关机作业时，提供控制信号151(如XAO信号)予所述控制电路140。在一些实施例中，所述控制信号151至少具有两种以上的电位状态，如第一电位与第二电位。所述控制信号151为第一电位时，所述控制电路140使所述基准电压线路131与所述多个伽马电压线路121为短接，所述控制信号151为第二电位时，所述控制 电路140使所述基准电压线路131与所述多个伽马电压线路121为断开。
图6a为本申请实施例提供的另一种显示装置的示意图。
如图6a所示，在本申请的一实施例中，所述控制电路140为主动开关141，所述主动开关141的控制端连接所述电源电路150。所述主动开关141的第一端与第二端分别连接所述多个伽马电压线路121与所述基准电压线路131。在一些实施例中，每一条伽马电压线路121与基准电压线路131之间都会设置一个主动开关141。
图6b为本申请实施例提供的另一种显示装置的示意图。
如图6a所示，在本申请的一实施例中，所述控制电路140为主动开关141，所述主动开关141连接于所述电源电路150、所述多个伽马电压线路121与所述基准电压线路131之间，然仅由一个主动开关141与所有的伽马电压线路121连接。
在一个实施例中，所述主动开关141例如为薄膜晶体管，在此不作限定。
在一个实施例中，所述主动开关141例如金属氧化物半导体场效应晶体管，在一些实施例中，是指P型金属氧化物半导体场效应晶体管。当所述控制信号151为高电位时，所述主动开关141的第一端与第二端不导通，所述多个伽马电压线路121与所述基准电压线路131之间为断开。当所述控制信号151为低电位时，所述主动开关141的第一端与第二端呈现导通，所述多个伽马电压线路121与所述基准电压线路131之间形成短接。
在一个实施例中，所述伽马电压产生电路120提供伽马参考电压，所述电压调节电路130提供基准电压，所述基准电压线路131与所述多个伽马电压线路121短接时，所述伽马参考电压与所述基准电压之间的电压差为0，进而使得每一像素22所对应液晶两端的压差为0，液晶即停止偏向，使得显示面板的画面立即变黑，从而消除了关机残影。
在一个实施例中，所述多个伽马电压线路121包括灰阶控制线路与黑画面控制线路。
在一个实施例中，所述控制电路140的第二端连接所述灰阶控制线路。
在一个实施例中，所述控制信号151为第二电位时，所述基准电压线路131与所述灰阶控制线路短接。所述灰阶控制线路上的所述伽马参考电压与所述基准电压之间的电压差为0，所述灰阶控制线路配对的像素22所对应液晶两端的压差为0，此等液晶即停止偏向。然而所述多个伽马电压线路121中的黑画面控制线路保持通路。
在一个实施例中，所述伽马电压产生电路120提供对应所述黑画面控制线路121b的控制电压至所述显示面板10，所述显示面板10呈现黑画面。
图7a为本申请实施例提供的另一种显示装置的示意图。
如图7a所示，在本申请的一实施例中，所述伽马电压产生电路120、所述电压调节电路130与所述控制电路140整合于伽马电压芯片170。
图7b为本申请实施例提供的另一种显示装置的示意图。
如图7b所示，在本申请的一实施例中，所述伽马电压产生电路120与所述电压调节电路130整合于伽马电压芯片170，所述伽马电压芯片170的输出线路包括所述基准电压线路131与所述多个伽马电压线路121，所述控制电路140连接所述基准电压线路131与所述多个伽马电压线路121之间。
图8为本申请实施例提供的另一种显示装置的示意图，请配合图1与图7b以利于理解。
如图8所所示，在本申请的一实施例中，所述显示装置还包括：
栅极驱动电路40；
所述电源电路150连接栅极驱动电路40，所述栅极驱动电路40连接多个栅极线，所述电源电路150输出所述控制信号151至所述栅极驱动电路40，所述栅极驱动电路40对所述多个栅极线同时提供扫描信号。
在一个实施例中，前述元件、线路、信号之间所述的连接，其方式包括但不限于直接连接、间接连接、电性耦接等方式。
在一个实施例中，所述伽马电压芯片的输出线路包括所述基准电压线路与所述多个伽马电压线路，所述控制电路连接所述基准电压线路与所述多个伽马电压线路之间。
在一个实施例中，所述伽马电压产生电路120提供伽马参考电压，所述电压调节电路130提供基准电压，所述基准电压线路与所述多个伽马电压线路短接时，所述伽马参考电压与所述基准电压之间的压差为0。
在一个实施例中，所述电源电路150连接栅极驱动电路40，所述栅极驱动电路40连接多个栅极线，所述电源电路150输出所述控制信号至所述栅极驱动电路40，所述栅极驱动电路40对所述多个栅极线同时提供扫描信号。
在一个实施例中，本实施例中的显示装置，包括：
显示面板10；
电源电路150，传输控制信号151；
栅极驱动电路40，连接布置于显示面板10的多个栅极线与所述电源电路150，所述栅极驱动电路40取得所述控制信号151；
伽马电压产生电路120，包括多个伽马电压线路121，所述伽马电压产生电路120通过所述多个伽马电压线路121输出伽马参考电压至显示面板10；
电压调节电路130，包括基准电压线路131，所述电压调节电路130通过所述基准电压线路131输出基准电压至显示面板10；
主动开关141，所述主动开关141的控制端连接于所述电源电路150，所述主动开关 141的第一端连接所述基准电压线路131，所述主动开关141的第二端连接所述多个伽马电压线路121，所述主动开关141自控制端取得所述控制信号151；其中，所述栅极驱动电路40取得所述控制信号151为第二电位时，对所述多个栅极线逐次提供扫描信号，所述主动开关141取得所述控制信号151为第二电位时，所述主动开关141为关闭，使所述基准电压线路131与所述多个伽马电压线路121之间为断开；
所述栅极驱动电路40取得所述控制信号151为第一电位时，对所述多个栅极线同时提供扫描信号，所述主动开关141取得所述控制信号151为第一电位时，所述主动开关141为打开，所述第一端与第二端为短路，以短接所述基准电压线路131与所述多个伽马电压线路121。
如图9所示，在本申请的一实施例中，一种消除关机残影方法，其包括：
通过伽马电压产生电路120提供伽马参考电压至显示面板10，所述伽马参考电压由所述伽马电压产生电路120的多个伽马电压线路121输出。
通过电压调节电路130提供基准电压至显示面板10，所述基准电压由所述电压调节电路130的基准电压线路131输出。
通过电源电路150传输控制信号151。
通过控制电路140取得所述控制信号151，并依据所述控制信号151为第一电位时短接所述基准电压线路131与所述多个伽马电压线路121，其中，所述伽马电压线路包括灰阶控制线路与黑画面控制线路。
在一个实施例中，所述消除关机残影方法，还包括：
通过参考电压产生电路110向所述伽马电压产生电路120和所述电压调节电路130提供参考电压。
在一个实施例中，所述消除关机残影方法，还包括：
通过栅极驱动电路40连接多个栅极线，其中，所述电源电路150输出所述控制信号至所述栅极驱动电路40，所述栅极驱动电路40对所述多个栅极线同时提供扫描信号。
在一个实施例中，所述消除关机残影方法还包括：
当所述基准电压线路与所述多个伽马电压线路短接时，所述伽马参考电压与所述基准电压之间的压差设置为0。
在一个实施例中，所述消除关机残影方法还包括：
当所述伽马电压产生电路120提供对应所述黑画面控制线路的控制电压至所述显示面板10，所述显示面板10呈现黑画面。
在一个实施例中，所述消除关机残影方法还包括：
将所述控制电路140的第二端连接所述多个伽马电压线路中的灰阶控制线路。
以上所述仅为本申请的可选实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。

Claims (19)

  1. 一种显示装置，包括：
    显示面板；
    伽马电压产生电路，通过多个伽马电压线路连接所述显示面板；
    电压调节电路，通过基准电压线路连接所述显示面板；
    电源电路，设置为传输控制信号；
    控制电路，所述控制电路的控制端连接于所述电源电路以取得所述控制信号，所述控制电路的第一端连接所述基准电压线路，所述控制电路的第二端连接所述多个伽马电压线路；以及
    所述控制电路取得所述控制信号为第一电位时，所述控制电路切换线路状态使所述第一端与所述第二端形成短路，使所述基准电压线路与所述多个伽马电压线路之间形成短接，缩小所述基准电压线路与所述多个伽马电压线路之间的压差；所述控制电路取得所述控制信号为第二电位时，所述控制电路切换线路状态使所述第一端与所述第二端形成开路，使所述基准电压线路与所述多个伽马电压线路之间为断开。
  2. 如权利要求1所述的显示装置，其中，所述显示装置还包括：
    参考电压产生电路，设置为向所述伽马电压产生电路和所述电压调节电路提供参考电压。
  3. 如权利要求2所述的显示装置，其中，所述伽马电压产生电路，还设置为根据所述参考电压生成多个伽马参考电压，所述参考电压产生电路连接所述伽马电压产生电路。
  4. 如权利要求1所述的显示装置，其中，所述控制电路为主动开关，所述主动开关的控制端连接所述电源电路，所述主动开关的第一端连接所述基准电压线路，所述主动开关的第二端连接所述多个伽马电压线路。
  5. 如权利要求4所述的显示装置，其中，所述伽马电压线路包括灰阶控制线路与黑画面控制线路。
  6. 如权利要求1所述的显示装置，其中，所述控制电路的第二端连接所述多个伽马电压线路中的灰阶控制线路。
  7. 如权利要求1所述的显示装置，其中，所述显示装置还包括：
    栅极驱动电路；
    所述栅极驱动电路连接多个栅极线，所述电源电路输出所述控制信号至所述栅极驱动电路，所述栅极驱动电路对所述多个栅极线同时提供扫描信号。
  8. 如权利要求3所述的显示装置，其中，所述伽马电压产生电路、所述电压调节电路 与所述控制电路整合于伽马电压芯片。
  9. 如权利要求3所述的显示装置，其中，所述伽马电压产生电路与所述电压调节电路整合于伽马电压芯片。
  10. 如权利要求1所述的显示装置，其中，所述伽马电压芯片的输出线路包括所述基准电压线路与所述多个伽马电压线路，所述控制电路连接所述基准电压线路与所述多个伽马电压线路之间。
  11. 如权利要求3所述的显示装置，其中，所述电压调节电路提供基准电压，所述基准电压线路与所述多个伽马电压线路短接时，所述伽马参考电压与所述基准电压之间的压差为0。
  12. 如权利要求5所述的显示装置，其中，所述伽马电压产生电路提供对应所述黑画面控制线路的控制电压至所述显示面板，所述显示面板呈现黑画面。
  13. 如权利要求1所述的显示装置，所述显示面板为曲面型显示面板。
  14. 一种显示装置，包括：
    显示面板；
    电源电路，传输控制信号；
    栅极驱动电路，连接多个栅极线与所述电源电路，所述栅极驱动电路取得所述控制信号；
    伽马电压产生电路，包括多个伽马电压线路，所述伽马电压产生电路通过所述多个伽马电压线路输出伽马参考电压至所述显示面板；
    电压调节电路，包括基准电压线路，所述电压调节电路通过所述基准电压线路输出基准电压至所述显示面板；
    主动开关，所述主动开关的控制端连接于所述电源电路，所述主动开关的第一端连接所述基准电压线路，所述主动开关的第二端连接所述多个伽马电压线路，所述主动开关自控制端取得所述控制信号；以及
    所述栅极驱动电路取得所述控制信号为第二电位时，对所述多个栅极线逐次提供扫描信号，所述主动开关取得所述控制信号为第二电位时，所述主动开关为关闭，使所述基准电压线路与所述多个伽马电压线路之间为断开；所述栅极驱动电路取得所述控制信号为第一电位时，对所述多个栅极线同时提供扫描信号，所述主动开关取得所述控制信号为第一电位时，所述主动开关为打开，所述第一端与第二端为短路，以使所述基准电压线路与所述多个伽马电压线路形成短接。
  15. 一种显示装置的消除关机残影方法，包括：
    通过伽马电压产生电路提供伽马参考电压至显示面板，所述伽马参考电压由所述伽马 电压产生电路的多个伽马电压线路输出；
    通过电压调节电路提供基准电压至所述显示面板，所述基准电压由所述电压调节电路的基准电压线路输出；
    通过电源电路传输控制信号；以及
    通过控制电路取得所述控制信号，并依据所述控制信号为第一电位时使所述基准电压线路与所述多个伽马电压线路形成通路，其中，所述伽马电压线路包括灰阶控制线路与黑画面控制线路。
  16. 如权利要求15所述的显示装置的消除关机残影方法，还包括：
    通过参考电压产生电路向所述伽马电压产生电路和所述电压调节电路提供参考电压。
  17. 如权利要求15所述的显示装置的消除关机残影方法，还包括：
    通过栅极驱动电路连接多个栅极线，其中，所述电源电路输出所述控制信号至所述栅极驱动电路，所述栅极驱动电路对所述多个栅极线同时提供扫描信号。
  18. 如权利要求15所述的显示装置的消除关机残影方法，其中，当所述伽马电压产生电路提供对应所述黑画面控制线路的控制电压至所述显示面板，所述显示面板呈现黑画面。
  19. 如权利要求15所述的显示装置的消除关机残影方法，其中，将所述控制电路的第二端连接所述多个伽马电压线路中的灰阶控制线路。
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