WO2019134611A1 - 液晶显示装置及其驱动方法 - Google Patents

液晶显示装置及其驱动方法 Download PDF

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Publication number
WO2019134611A1
WO2019134611A1 PCT/CN2018/125455 CN2018125455W WO2019134611A1 WO 2019134611 A1 WO2019134611 A1 WO 2019134611A1 CN 2018125455 W CN2018125455 W CN 2018125455W WO 2019134611 A1 WO2019134611 A1 WO 2019134611A1
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Prior art keywords
switching elements
time point
driving circuit
pixel electrodes
common electrode
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PCT/CN2018/125455
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English (en)
French (fr)
Inventor
胡水秀
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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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Priority to US16/959,823 priority Critical patent/US20200372874A1/en
Publication of WO2019134611A1 publication Critical patent/WO2019134611A1/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
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
    • 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
    • G09G3/3674—Details of drivers for scan electrodes
    • G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • 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
    • G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
    • 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
    • G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/026—Arrangements or methods related to booting a display

Definitions

  • the present application relates to a liquid crystal display device and a driving method thereof, and more particularly to a liquid crystal display device capable of eliminating a whitening phenomenon when a screen is turned on, and a driving method thereof.
  • liquid crystal display devices which have gradually replaced traditional cathode ray tube display devices due to their superior characteristics such as light weight, low power consumption and no radiation. And applied to many kinds of electronic products, such as mobile phones, portable multimedia devices, notebook computers, LCD TVs and LCD screens, and the like.
  • the input pixel electrode is the data voltage
  • the input common electrode is the common electrode voltage (Vcom).
  • the data voltage is not immediately applied to the pixel electrode, but at this time, the common electrode voltage has been applied to the common electrode, so that the voltage difference between the pixel electrode and the common electrode is equal to the common electrode voltage, resulting in At the moment of booting, the panel screen will appear white.
  • the purpose of the application is to provide a liquid crystal display device and a driving method thereof, which can eliminate the flashing phenomenon at the instant of startup and improve the picture quality.
  • the present application provides a driving method for a liquid crystal display device.
  • the liquid crystal display device has a display panel and a driving circuit.
  • the driving circuit is electrically connected to the display panel.
  • the display panel includes a plurality of pixels, and the plurality of pixels respectively have a plurality of first switches.
  • the driving circuit is electrically connected to the plurality of pixel electrodes respectively by the plurality of first switching elements, the method comprising: when the power is turned on and a trigger signal is caused by the first time point When the first switching element is turned on, the driving circuit transmits a common electrode voltage to the plurality of pixel electrodes at the first time point; and receives a start signal of the first frame image at a second time point after the first time point At the rising edge, the driving circuit causes the plurality of data voltages to be transmitted to the plurality of pixel electrodes through the plurality of first switching elements, so that the plurality of pixels display the image.
  • the present application further provides a liquid crystal display device including a display panel and a driving circuit.
  • the display panel includes a plurality of pixels, and the plurality of pixels respectively have a plurality of first switching elements, a plurality of pixel electrodes, and a common electrode.
  • the driving circuit is electrically connected to the display panel, and the driving circuit is electrically connected to the plurality of pixel electrodes respectively through the plurality of first switching elements; wherein, when the power is turned on and a trigger signal is used to make the plurality of first switching elements at a first time point When turned on, the driving circuit transmits a common electrode voltage to the plurality of pixel electrodes at a first time point; when a rising edge of a start signal of the first frame image is received at a second time point after the first time point, The driving circuit causes the plurality of data voltages to be transmitted to the plurality of pixel electrodes through the plurality of first switching elements, so that the plurality of pixels display the image.
  • the driving circuit includes a source driver and a common electrode voltage driving circuit
  • the common electrode voltage driving circuit includes a plurality of second switching elements, a third switching element and a logic control circuit, and a plurality of second switching elements.
  • the source driver is electrically connected to the plurality of pixel electrodes through the plurality of data lines, the plurality of second switching elements, and the plurality of first switching elements.
  • the third switching element when the trigger signal is at a first trigger level at the first time point, the third switching element is turned on, and the logic control circuit controls the plurality of second switching elements to be turned off, and the source driver makes the common electrode voltage
  • the plurality of pixel electrodes are respectively transmitted through the plurality of data lines, the third switching element, and the plurality of first switching elements.
  • the trigger signal is a second trigger level and the plurality of second switching elements are turned on
  • the third switching element is turned off
  • the source driver passes the plurality of data voltages through the plurality of data lines
  • the second switching elements and the plurality of first switching elements are transmitted to the plurality of pixel electrodes.
  • the logic control circuit is a NOT gate.
  • the driving circuit has a gate driver and a source driver, the gate driver is electrically connected to the plurality of first switching elements of the plurality of pixels, and the source driver passes through the plurality of data lines and the plurality of first The switching elements are electrically connected.
  • the gate driver controls the plurality of first switching elements to be turned on, and an enable signal controls the source driver to make the common electrode voltage be the first
  • the time point is transmitted to the plurality of pixel electrodes through the plurality of data lines.
  • the enable signal controls the source driver to cause the plurality of data voltages to be transmitted to the plurality of pixel electrodes through the plurality of data lines.
  • the driving circuit includes a gate driver, and the trigger signal further causes the gate driver to control the plurality of first switching elements to be turned on through the plurality of gate lines at the first time point.
  • the pixel voltage of the plurality of pixels is zero before the second time point.
  • the present application further provides a liquid crystal display device, which is a liquid crystal display device including a display panel and a driving circuit.
  • the display panel includes a plurality of pixels, and the plurality of pixels respectively have a plurality of first switching elements, a plurality of pixel electrodes, and a common electrode.
  • the driving circuit is electrically connected to the display panel, and the driving circuit is electrically connected to the plurality of pixel electrodes through the plurality of first switching elements.
  • the driving circuit transmits a common electrode voltage to the plurality of pixel electrodes at the first time point; when after the first time point When receiving a rising edge of a start signal of the first frame image at a second time point, the driving circuit transmits the plurality of data voltages to the plurality of pixel electrodes through the plurality of first switching elements, so that the plurality of pixels display the image;
  • the driving circuit includes a source driver and a common electrode voltage driving circuit.
  • the common electrode voltage driving circuit includes a plurality of second switching elements, a third switching element and a logic control circuit, and the plurality of second switching elements are correspondingly disposed in the plurality of On the data line, the source driver is electrically connected to the plurality of pixel electrodes through the plurality of data lines, the plurality of second switching elements, and the plurality of first switching elements; when the trigger signal is a first trigger current at the first time point Normally, the third switching element is turned on, and the logic control circuit controls the plurality of second switching elements to be disconnected, and the source driver passes the common electrode voltage through the plurality of data
  • the third switching element and the plurality of first switching elements are respectively transmitted to the plurality of pixel electrodes; when the trigger signal is a second trigger level and the plurality of second switching elements are turned on, the third switching element is turned off, the source is The driver transmits the plurality of data voltages to the plurality of pixel electrodes through the plurality of data lines, the plurality of second switching elements, and the plurality of first switching
  • the liquid crystal display device and the driving method thereof make the application not only simple in control, low in cost, but also completely eliminate the flashing phenomenon at the instant of turning on the liquid crystal display device and improve the picture quality of the liquid crystal display device.
  • FIG. 1A is a functional block diagram of a liquid crystal display device of an embodiment.
  • Fig. 1B is a schematic view showing a pixel of a liquid crystal display device of an embodiment.
  • FIG. 2 is a schematic diagram showing the steps of a driving method of a liquid crystal display device according to a first embodiment of the present application.
  • FIG. 3 is a schematic diagram of a control circuit for common electrode voltage output control of an embodiment.
  • FIG. 4 is a schematic diagram of the signal waveform of FIG. 3.
  • FIG. 5 is a schematic circuit diagram of a source driver of a driving circuit of a liquid crystal display device of another embodiment electrically connected to a plurality of pixels of a display panel through a plurality of switching elements.
  • FIG. 6 is a schematic diagram of the signal waveform of FIG. 5.
  • FIG. 7 is a schematic diagram showing the steps of a driving method of a liquid crystal display device according to a second embodiment of the present application.
  • FIG. 8 is a schematic diagram showing the circuit connection of a source driver, a gate driver, and a plurality of pixels of a liquid crystal display device according to still another embodiment.
  • FIG. 9 is a schematic diagram of the signal waveform of FIG. 8.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining “first” and “second” may include one or more of the features either explicitly or implicitly.
  • a plurality means two or more unless otherwise stated.
  • the term “comprises” and its variations are intended to cover a non-exclusive inclusion.
  • connection In the description of the present application, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise specifically defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • Connected, or integrally connected can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • the specific meanings of the above terms in the present application can be understood in the specific circumstances for those skilled in the art.
  • FIG. 1A is a functional block diagram of a liquid crystal display device of an embodiment
  • FIG. 1B is a schematic diagram of a pixel of a liquid crystal display device of an embodiment.
  • the liquid crystal display device 1 has a display panel 11 and a driving circuit 12 , and the driving circuit 12 is electrically connected to the display panel 11 .
  • the display panel 11 can have a plurality of pixels P, and each of the pixels P can have a pixel electrode P1, a common electrode P2, and a plurality of liquid crystal molecules P3 sandwiched between the pixel electrode P1 and the common electrode P2.
  • the driving circuit 12 When the driving circuit 12 outputs a plurality of data voltages to the pixel electrode P1 of the plurality of pixels P and outputs a common electrode voltage to the common electrode P2 of the plurality of pixels P, a voltage difference can be formed between the pixel electrode P1 and the common electrode P2, so that a voltage difference is generated between the pixel electrode P1 and the common electrode P2.
  • the liquid crystal molecule P3 can be rotated to a certain angle to realize display of the picture.
  • the driving circuit 12 can include a gate driver, a source driver, and a timing controller (not shown in FIG. 1 and FIG. 2).
  • the gate driver may be coupled to the display panel 11 through a plurality of gate lines
  • the source driver may be coupled to the display panel 11 through a plurality of data lines.
  • the timing controller can transmit a vertical synchronization start signal (STV) and a horizontal synchronization signal to the gate driver, and convert the video signal received from the external interface into a data voltage required by the source driver, and transmit the data signal and Horizontal sync signal to source driver.
  • STV vertical synchronization start signal
  • the source driver may output a plurality of data voltages corresponding to the plurality of data lines to the pixel electrode P1 of the plurality of pixels P, and output the common electrode voltage to the common electrode P2.
  • the gate driver can sequentially turn on a plurality of gate lines according to a vertical sync start signal (STV) at the beginning of a frame time, and when the plurality of gate lines are sequentially turned on, respectively, the source The driver can transmit a plurality of data voltages to each of the pixels P through the plurality of data lines, so that the display panel 11 can display the image.
  • STV vertical sync start signal
  • FIG. 2 is a schematic diagram of steps of a driving method of a liquid crystal display device according to a first embodiment of the present application
  • FIG. 3 is a schematic diagram of a control circuit of a common electrode voltage output control according to an embodiment
  • FIG. 4 is a signal waveform of FIG. schematic diagram.
  • the driving circuit 12 of the embodiment further has a logic control module 124.
  • the signal Vg outputted by the logic control module 124 can control a switching element T (for example, a MOSFET) to be turned on, so that the driving circuit 12 is turned on.
  • the common electrode voltage Vcom can be output to the common electrode P2.
  • the driving method of the liquid crystal display device of the present embodiment includes the step S01: the rising edge of a start signal STV of the first frame image is received by the driving circuit 12 at a time point t when the power is turned on.
  • the drive circuit 12 transmits a plurality of data voltages to the plurality of pixel electrodes P1 at the time point t, and transmits the common electrode voltage Vcom to the common electrode P2 at the time point t, so that the plurality of pixels P display the image.
  • the control signal VAA maintains the first trigger level (for example, a high level), and when the system detects the power-on and at the time point t, the first frame image
  • the signal Vg outputted by the logic control module 124 also becomes a high level, so that the switching element T is turned on, and at this time, the driving circuit 12 makes the common electrode voltage Vcom is output to the common electrode P2.
  • the logic control module 124 can output the common electrode voltage Vcom and transmit it to the common Electrode P2. Therefore, before the time point t (before the rising edge of the start signal STV), the common electrode voltage Vcom is not input to the common electrode P2, and at the same time, the data voltage of the first frame image is not input to the pixel electrode P1, Therefore, the pixel voltage of each pixel P is zero (the pixel voltage is the voltage difference between the pixel electrode P1 and the common pole P2), whereby the flashing phenomenon at the instant of turning on can be eliminated, and the picture quality can be improved.
  • the driving circuit 12 can transmit the plurality of data voltages of the first frame image to the plurality of pixel electrodes P1, and the common electrode voltage Vcom is also transmitted to the common electrode P2, so that the pixel P can normally display the image frame.
  • the first trigger level can be a high level
  • the logic control module 124 can include an AND gate.
  • the first trigger level can also be low, and the logic control module 124 can include a NOT AND gate.
  • FIG. 5 and FIG. 6 and FIG. 7 are schematic circuit diagram of a driving circuit of a liquid crystal display device of another embodiment electrically connected to a plurality of pixels of a display panel
  • FIG. 6 is a schematic diagram of signal waveforms of FIG. 5
  • FIG. 7 is a second embodiment of the present application.
  • the plurality of pixels P may further include a plurality of first switching elements T1 TTN (TFT), and the source driver 122 may be The plurality of pixel electrodes P1 are electrically connected to each other through the plurality of data lines D1 to DN and the plurality of first switching elements T1 to TN.
  • TFT first switching elements
  • the gate drivers 121 respectively control the plurality of first switching elements T1 TTN of the plurality of pixels P through the gate line G to be turned on
  • the source controller 122 can respectively transmit the data voltages to the plurality of pixels P through the data lines D1 DN DN.
  • the driving circuit 12 of the present embodiment may include a common electrode voltage driving circuit 123 in addition to the gate driver 121 and the source driver 122, and the common electrode voltage driving circuit 123 may include a plurality of second switching elements S1 to SN, one.
  • a third switching element S (such as a MOSFET) and a logic control circuit.
  • the plurality of second switching elements S1 to SN are correspondingly disposed on the plurality of data lines D1 to DN, and the source driver 122 can pass through the plurality of second switching elements S1 to SN, the plurality of data lines D1 to DN, and the plurality of first
  • the switching elements T1 to TN are electrically connected to the plurality of pixel electrodes P1, respectively.
  • a trigger signal XAO can control the third switching element S, and a plurality of second switching elements S1 to SN can be controlled by the logic control circuit.
  • the logic control circuit turns off the second switching elements S1 SN SN (non-conducting) and the third switching element S is turned on, the common electrode voltage Vcom can pass through the third switching element S and the plurality of data lines D1 DN DN
  • the first switching elements T1 to TN are transmitted to the plurality of pixel electrodes P1.
  • the logic control circuit is, for example but not limited to, a NOT gate.
  • the driving method of the liquid crystal display device of the present embodiment may include: when the startup signal and the trigger signal XAO turn on (turn on) the plurality of first switching elements T1 to TN at a first time point t1,
  • the driving circuit 12 transmits a common electrode voltage Vcom to the plurality of pixel electrodes P1 at the first time point t1 (step T01), and receives the first frame image together at a second time point t2 after the first time point t1.
  • the drive circuit 12 transmits a plurality of data voltages to the plurality of pixel electrodes P1 through the plurality of first switching elements T1 to TN, and causes the plurality of pixels P to display an image (step T02).
  • the trigger signal XAO changes to the first trigger level (eg, a high level) at the first time point t1, and the third switching element S is turned on. And the trigger signal XAO also turns off the second switching elements S1 to SN through the NOT gate N (non-conducting), at the same time, the trigger signal XAO is at the first time point t1 is high level, and the gate driver 121 passes.
  • the gate line G controls the plurality of first switching elements T1 to TN to be turned on.
  • the common electrode voltage Vcom can pass through the third switching element S, the data lines D1 to DN, and the first switching element at the first time point t1.
  • T1 to TN are respectively transmitted to the plurality of pixel electrodes P1, so that the voltage of the pixel electrode P1 of each pixel P is the common electrode voltage Vcom, and since the common electrode voltage Vcom is also transmitted to the common electrode P2, the pixel voltage of each pixel P is made zero. Therefore, between the second time point t2 (before the rising edge of the start signal STV of the first frame image), the pixel voltage of the pixel P is zero, thereby eliminating the flashing phenomenon at the start-up instant, thereby improving the picture quality.
  • the trigger signal XAO becomes the second trigger level (for example, a low level), and the third switching element S Disconnected, the low level also causes the plurality of second switching elements S1 - SN to be turned on.
  • the gate controller 121 can sequentially transmit the gate signals to sequentially turn on the first switching elements T1 through the gate lines G.
  • the drive circuit 12 can transmit a plurality of data voltages of the first frame image to the plurality of pixel electrodes P1 through the plurality of second switching elements S1 to SN, the data lines D1 to DN, and the first switching elements T1 to TN, respectively.
  • the display panel 11 can display the image screen normally.
  • the first trigger level described above is a high level
  • the second trigger level is a low level. For example, in different embodiments, the opposite may be applied.
  • FIG. 8 is a schematic diagram of a circuit connection of a source driver, a gate driver, and a plurality of pixels of a liquid crystal display device according to still another embodiment
  • FIG. 9 is a diagram of FIG. A schematic diagram of the signal waveform of 8.
  • the source driver 122 can be electrically connected to the plurality of pixel electrodes P1 via the plurality of data lines D1 to DN and the plurality of first switching elements T1 to TN.
  • the gate driver 121 is electrically connected to the plurality of first switching elements T1 to TN of the plurality of pixels P, and when the gate driver 121 controls the plurality of first switching elements T1 to TN to be turned on by the gate line G, respectively.
  • the source controller 122 can transmit a voltage signal to the pixel P through the data lines D1 to DN.
  • the trigger signal XAO changes to the first trigger level (eg, a high level) at the first time point t1 to cause the gate driver 121 to pass.
  • the gate line G controls the plurality of first switching elements T1 to TN to be turned on.
  • an enable signal EN also changes to a high level (first trigger level) to control the source driver 122 to input the source to the source.
  • the common electrode voltage Vcom of the high level of the driver 122 is transmitted to the plurality of pixel electrodes P1 through the data lines D1 to DN and the plurality of first switching elements T1 to TN at the first time point t1, so that the pixel electrode P1 has the common electrode voltage Vcom, Further, the pixel voltage of each pixel P is set to 0, thereby eliminating the flashing phenomenon at the time of booting and improving the picture quality.
  • the trigger signal XAO, the enable signal EN, and the input to the source driver 122 are input.
  • the common electrode voltage Vcom is changed to the second trigger level (for example, a low level), and the gate controller 121 can transmit the gate signal to sequentially turn on the first switching elements T1 to TN through the gate line G, and
  • the enable signal EN controls the source driver 122 to transmit the plurality of data voltages of the corresponding first frame image to the plurality of pixel electrodes P1 through the plurality of data lines D1 to DN and the plurality of first switching elements T1 to TN to cause the display panel 11
  • the image screen can be displayed normally.
  • the liquid crystal display device and the driving method thereof make the application not only simple in control, low in cost, but also completely eliminate the flashing phenomenon at the instant of turning on the liquid crystal display device and improve the picture quality of the liquid crystal display device.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

公开了一种液晶显示装置及其驱动方法。该液晶显示装置的显示面板的多个像素分别具有多个第一开关元件、多个像素电极与一共电极，驱动电路通过多个第一开关元件分别与多个像素电极电性连接，该方法包括：当开机瞬间且一触发信号于一第一时间点使多个第一开关元件导通时，驱动电路使一共电极电压于第一时间点传送至多个像素电极（T01）；以及当在第一时间点之后的一第二时间点接收到第一个帧图像的一起始信号的上升沿时，驱动电路使多个数据电压通过多个第一开关元件传送至多个像素电极，使多个像素显示影像（T02）。

Description

液晶显示装置及其驱动方法 技术领域
本申请关于一种液晶显示装置及其驱动方法，特别关于一种可消除开机瞬间画面会出现闪白现象的液晶显示装置及其驱动方法。
背景技术
随着科技的进步，平面显示装置已经广泛的被运用在各种领域，尤其是液晶显示装置，因具有体型轻薄、低功率消耗及无辐射等优越特性，已经渐渐地取代传统阴极射线管显示装置，而应用至许多种类之电子产品中，例如行动电话、可携式多媒体装置、笔记型计算机、液晶电视及液晶屏幕等等。
在公知技艺中，为了使液晶显示装置显示影像，需要对各像素的像素电极与共电极之间施加一电压差以改变液晶分子的旋转角度，借此改变光线的透射率从而显示不同的画面。其中，输入像素电极的是数据电压，而输入共电极的是共电极电压(Vcom)。
然而，在液晶显示装置开机瞬间，数据电压并不会立刻施加在像素电极，但是，此时共电极电压却已施加在共电极，使得像素电极与共电极之间的电压差等于共电极电压，导致开机瞬间面板画面会出现闪白的现象。
发明内容
有鉴于先前技术的不足，发明人经研发后得本申请。本申请的目的为提供一种液晶显示装置及其驱动方法，可消除开机瞬间闪白现象，提高画面质量。
本申请提出一种液晶显示装置的驱动方法，液晶显示装置具有一显示面板及一驱动电路，驱动电路与显示面板电性连接，显示面板包括多个像素，多个像素分别具有多个第一开关元件、多个像素电极与一共电极，驱动电路通过多个第一开关元件分别与多个像素电极电性连接，所述方法包括：当开机瞬间且一触发信号于一第一时间点使多个第一开关元件导通时，驱动电路使一共电极电压于第一时间点传送至多个像素电极；以及当在第一时间点之后的一第二时间点接收到第一个帧图像的一起始信号的上升沿时，驱动电路 使多个数据电压通过多个第一开关元件传送至多个像素电极，使多个像素显示影像。
本申请另提出一种液晶显示装置，包括一显示面板以及一驱动电路。显示面板包括多个像素，多个像素分别具有多个第一开关元件、多个像素电极与一共电极。驱动电路与显示面板电性连接，驱动电路通过多个第一开关元件分别与多个像素电极电性连接；其中，当开机瞬间且一触发信号于一第一时间点使多个第一开关元件导通时，驱动电路使一共电极电压于第一时间点传送至多个像素电极；当在第一时间点之后的一第二时间点接收到第一个帧图像的一起始信号的上升沿时，驱动电路使多个数据电压通过多个第一开关元件传送至多个像素电极，使多个像素显示影像。
在一实施例中，驱动电路包括一源极驱动器及一共电极电压驱动电路，共电极电压驱动电路包括多个第二开关元件、一第三开关元件与一逻辑控制电路，多个第二开关元件对应设置于多条数据线上，源极驱动器通过多条数据线、多个第二开关元件、多个第一开关元件分别与多个像素电极电性连接。
在一实施例中，当触发信号于第一时间点为一第一触发电平时，第三开关元件导通，且逻辑控制电路控制多个第二开关元件断开，源极驱动器使共电极电压通过多条数据线、第三开关元件与多个第一开关元件分别传送至多个像素电极。
在一实施例中，当触发信号为一第二触发电平而使多个第二开关元件导通时，第三开关元件断开，源极驱动器将多个数据电压通过多条数据线、多个第二开关元件与多个第一开关元件传送至多个像素电极。
在一实施例中，逻辑控制电路为非门。
在一实施例中，驱动电路具有一栅极驱动器与一源极驱动器，栅极驱动器与多个像素的多个第一开关元件电性连接，源极驱动器通过多条数据线与多个第一开关元件电性连接。
在一实施例中，当触发信号于第一时间点为一第一触发电平时，栅极驱动器控制多个第一开关元件导通，一使能信号控制源极驱动器使共电极电压于第一时间点通过多条数据线传送至多个像素电极。
在一实施例中，当于第二时间点时，使能信号控制源极驱动器使多个数据电压通过多条数据线传送至多个像素电极。
在一实施例中，驱动电路包括一栅极驱动器，触发信号在第一时间点还使栅极驱动器通过多条栅极线控制多个第一开关元件导通。
在一实施例中，于第二时间点之前，多个像素的像素电压为零。
本申请又提出一种液晶显示装置，一种液晶显示装置，包括一显示面板以及一驱动电路。显示面板包括多个像素，多个像素分别具有多个第一开关元件、多个像素电极与一共电极。驱动电路与显示面板电性连接，驱动电路通过多个第一开关元件分别与多个像素电极电性连接。其中，当开机瞬间且一触发信号于一第一时间点使多个第一开关元件导通时，驱动电路使一共电极电压于第一时间点传送至多个像素电极；当在第一时间点之后的一第二时间点接收到第一个帧图像的一起始信号的上升沿时，驱动电路使多个数据电压通过多个第一开关元件传送至多个像素电极，使多个像素显示影像；其中，驱动电路包括一源极驱动器及一共电极电压驱动电路，共电极电压驱动电路包括多个第二开关元件、一第三开关元件与一逻辑控制电路，多个第二开关元件对应设置于多条数据线上，源极驱动器通过多条数据线、多个第二开关元件、多个第一开关元件分别与多个像素电极电性连接；当触发信号于第一时间点为一第一触发电平时，第三开关元件导通，且逻辑控制电路控制多个第二开关元件断开，源极驱动器使共电极电压通过多条数据线、第三开关元件与多个第一开关元件分别传送至多个像素电；当触发信号为一第二触发电平而使多个第二开关元件导通时，第三开关元件断开，源极驱动器将多个数据电压通过多条数据线、多个第二开关元件与多个第一开关元件传送至多个像素电极。
承上所述，通过上述的液晶显示装置及其驱动方法，使得本申请不仅控制简单，成本低，而且也可完全消除液晶显示装置开机瞬间的闪白现象，提高液晶显示装置的画面质量。
附图说明
所包括的附图用来提供对本申请实施例的进一步的理解，其构成了说明书的一部分，用于例示本申请的实施方式，并与文字描述一起来阐释本申请的原理。显而易见地，下面描述中的附图仅仅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性的前提下，还可以根据这 些附图获得其他的附图。在附图中：
图1A为一实施例的液晶显示装置的功能方块示意图。
图1B为一实施例的液晶显示装置的一个像素的示意图。
图2为本申请第一实施例之一种液晶显示装置的驱动方法的步骤示意图。
图3为一实施例的共电极电压输出控制的控制电路示意图。
图4为图3的信号波形示意图。
图5为另一实施例的液晶显示装置的驱动电路的源极驱动器通过多个开关元件与显示面板的多个像素电性连接的电路示意图。
图6为图5的信号波形示意图。
图7为本申请第二实施例之一种液晶显示装置的驱动方法的步骤示意图。
图8为又一实施例的液晶显示装置的源极驱动器、闸极驱动器和多个像素的电路连接示意图。
图9为图8的信号波形示意图。
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
这里所公开的具体结构和功能细节仅仅是代表性的，并且是用于描述本申请的示例性实施例的目的。但是本申请可以通过许多替换形式来具体实现，并且不应当被解释成仅仅受限于这里所阐述的实施例。
在本申请的描述中，需要理解的是，术语“中心”、“横向”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。另外，术语“包括”及其任何变形，意图在于覆盖不排他的包含。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
这里所使用的术语仅仅是为了描述具体实施例而不意图限制示例性实施例。除非上下文明确地另有所指，否则这里所使用的单数形式“一个”、“一项”还意图包括复数。还应当理解的是，这里所使用的术语“包括”和/或“包含”规定所陈述的特征、整数、步骤、操作、单元和/或组件的存在，而不排除存在或添加一个或更多其他特征、整数、步骤、操作、单元、组件和/或其组合。
以下将参照相关图式，说明依本申请较佳实施例之液晶显示装置及其驱动方法，其中相同的组件将以相同的参照符号加以说明。
图1A为一实施例的液晶显示装置的功能方块示意图，而图1B为一实施例的液晶显示装置的一个像素的示意图。
如图1A与图1B所示，液晶显示装置1具有一显示面板11及一驱动电路12，驱动电路12与显示面板11电性连接。显示面板11可具有多个像素P，各像素P可分别具有一像素电极P1、一共电极P2及夹置于像素电极P1与共电极P2之间的多个液晶分子P3。当驱动电路12输出多个数据电压至多个像素P的像素电极P1，且输出一共电极电压传送至多个像素P的共电极P2时，可使像素电极P1与共电极P2之间形成一电压差，使液晶分子P3可旋转到一定的角度，以实现画面的显示。
在一些实施例中，驱动电路12可包括一栅极驱动器、一源极驱动器及一时序控制器(图1、图2未绘示)。栅极驱动器可通过多条栅极线与显示面板11耦接，而源极驱动器可通过多条数据线与显示面板11耦接。其中，时序控制器可传送垂直同步起始信号(STV)及水平同步信号至栅极驱动器，并将自外部接口所接收的视讯信号转换成源极驱动器所需的数据电压，并传送数据信号与水平同步信号至源极驱动器。而源极驱动器可输出与多条数据线对应的多个数据电压至多个像素P的像素电极P1，并输出共电极电压至共电极P2。此外，栅极驱动器可在一个帧时间(frame time)开始时依据垂直同步起始信号(STV)依序导通多条栅极线，当多条栅极线分别依序导通时，源极驱动器 可对应将多个数据电压通过多条数据线传送至各像素P，使显示面板11可显示影像。
请参照图2并配合图3、图4所示，以说明如何消除背景技术所述的开机瞬间闪白现象。其中，图2为本申请第一实施例之一种液晶显示装置的驱动方法的步骤示意图，图3为一实施例的共电极电压输出控制的控制电路示意图，而图4为图3的信号波形示意图。
请先参照图3所示，本实施例的驱动电路12还可具有一逻辑控制模块124，逻辑控制模块124输出的信号Vg可控制一开关元件T(例如为MOSFET)导通，使驱动电路12可输出共电极电压Vcom至共电极P2。
如图2所示，本实施例液晶显示装置的驱动方法包括步骤S01：当开机瞬间且驱动电路12于一时间点t接收到第一个帧图像的一起始信号STV的上升沿(rising edge)时，驱动电路12于时间点t传送多个数据电压至多个像素电极P1，且于时间点t传送共电极电压Vcom至共电极P2，使多个像素P显示影像。
详细来说，在图3与图4中，控制信号VAA一直维持着第一触发电平(例如是高电平)，而且，当系统检测到开机且在时间点t而第一个帧图像的起始信号STV的上升沿也到来时(高电平)，逻辑控制模块124输出的信号Vg则也变为高电平，使得开关元件T导通，此时，驱动电路12才使共电极电压Vcom得以输出至共电极P2。
换句话说，在本实施例中，当控制信号VAA与显示面板11的第一个帧图像的起始信号STV皆为高电平时，逻辑控制模块124可使共电极电压Vcom输出而传送至共电极P2。因此，在时间点t之前(即起始信号STV的上升沿之前)，共电极电压Vcom并未输入至共电极P2，在此同时，第一帧图像的数据电压也未输入至像素电极P1，所以各像素P的像素电压为零(像素电压为像素电极P1与共同极P2的电压差)，借此可消除开机瞬间的闪白现象，进而可提高画面品质。
而在时间点t之后，驱动电路12可传送第一帧图像的多个数据电压至多个像素电极P1的同时，共电极电压Vcom也一直传送至共电极P2，使像素P可正常显示影像画面。在本实施例中，第一触发电平可为高电平，且逻辑控制模块124可包含一及门(AND gate)。在另一些实施例中，第一触发电平 也可为低电平，且逻辑控制模块124可包含一反及门(NOT AND gate)。
另外，请参照图5、图6并配合图7所示，以说明第二实施例的液晶显示装置及其驱动方法。其中，图5为另一实施例的液晶显示装置的驱动电路与显示面板的多个像素电性连接的电路示意图，图6为图5的信号波形示意图，而图7为本申请第二实施例之一种液晶显示装置的驱动方法的步骤示意图。
在图5与图6中，显示面板11的像素P除了像素电极P1和共电极P2外，多个像素P还可包括多个第一开关元件T1～TN(TFT)，且源极驱动器122可通过多条数据线D1～DN、多个第一开关元件T1～TN与多个像素电极P1电性连接。当栅极驱动器121分别通过栅极线G控制多个像素P的多个第一开关元件T1～TN导通时，源极控制器122可通过数据线D1～DN分别传送数据电压至多个像素P。
另外，本实施例的驱动电路12除了栅极驱动器121与源极驱动器122外，还可包括一共电极电压驱动电路123，共电极电压驱动电路123可包括多个第二开关元件S1～SN、一第三开关元件S(例如MOSFET)与一逻辑控制电路。多个第二开关元件S1～SN对应设置于多条数据线D1～DN上，且源极驱动器122可通过多个第二开关元件S1～SN、多条数据线D1～DN、多个第一开关元件T1～TN分别与多个像素电极P1电性连接。另外，一触发信号XAO可控制第三开关元件S，同时可通过逻辑控制电路控制多个第二开关元件S1～SN。当逻辑控制电路使第二开关元件S1～SN断开(不导通)而第三开关元件S导通时，共电极电压Vcom可通过第三开关元件S、多条数据线D1～DN与多个第一开关元件T1～TN传送至多个像素电极P1。在本实施例中，逻辑控制电路例如但不限于为非门N(NOT gate)。
如图7所示，本实施例液晶显示装置的驱动方法可包括：当开机瞬间且一触发信号XAO于一第一时间点t1使多个第一开关元件T1～TN导通(打开)时，驱动电路12使一共电极电压Vcom于第一时间点t1传送至多个像素电极P1(步骤T01)，以及当在第一时间点t1之后的一第二时间点t2接收到第一个帧图像的一起始信号STV的上升沿时，驱动电路12使多个数据电压通过多个第一开关元件T1～TN传送至多个像素电极P1，使多个像素P显示影像(步骤T02)。
详细来说，当系统检测到开机时(即VCC电压上升)时，触发信号XAO 在第一时间点t1改变为第一触发电平(例如是高电平)，第三开关元件S则导通，且触发信号XAO也通过非门N使第二开关元件S1～SN断开(不导通)，在此同时，触发信号XAO在第一时间点t1为高电平也使栅极驱动器121通过栅极线G控制多个第一开关元件T1～TN导通，此时，共电极电压Vcom就可在第一时间点t1时通过第三开关元件S、数据线D1～DN、第一开关元件T1～TN分别传送至多个像素电极P1，使各像素P的像素电极P1的电压都是共电极电压Vcom，由于共电极电压Vcom也传送至共电极P2，因此使各像素P的像素电压为0，使得在第二时间点t2之间(第一个帧图像的起始信号STV的上升沿之前)，像素P的像素电压为零，借此消除开机瞬间的闪白现象，进而提高画面品质。
之后，当在第二时间点t2且第一个帧图像的起始信号STV的上升沿到来时，触发信号XAO则变为第二触发电平(例如是低电平)，第三开关元件S断开，低电平也导致多个第二开关元件S1～SN被导通，此时，栅极控制器121可依序传送栅极信号通过栅极线G依序导通第一开关元件T1～TN，驱动电路12就可传送第一帧图像的多个数据电压通过多个第二开关元件S1～SN、数据线D1～DN、第一开关元件T1～TN分别传送至多个像素电极P1，使显示面板11可正常显示影像画面。上述的第一触发电平为高电平，且第二触发电平为低电平只是举例，在不同的实施例中，也可相反。
另外，参照图8、图9并配合图7所示，其中，图8为又一实施例的液晶显示装置的源极驱动器、闸极驱动器和多个像素的电路连接示意图，而图9为图8的信号波形示意图。
在图8与图9中，源极驱动器122可通过多条数据线D1～DN、多个第一开关元件T1～TN与多个像素电极P1电性连接。另外，栅极驱动器121与多个像素P的多个第一开关元件T1～TN电性连接，且当栅极驱动器121分别通过栅极线G控制多个第一开关元件T1～TN导通时，源极控制器122可通过数据线D1～DN传送电压信号至像素P。
在本实施例中，当系统检测到开机时(即VCC电压上升)时，触发信号XAO在第一时间点t1变为第一触发电平(例如是高电平)而使栅极驱动器121通过栅极线G控制多个第一开关元件T1～TN导通，此时，一使能信号EN也变到高电平(第一触发电平)，以控制源极驱动器122使输入至源极驱 动器122的高电平的共电极电压Vcom在第一时间点t1通过数据线D1～DN和多个第一开关元件T1～TN传送至多个像素电极P1，使像素电极P1具有共电极电压Vcom，进而使各像素P的像素电压为0，借此消除开机瞬间的闪白现象，提高画面品质。
之后，当在第一时间点t1之后的第二时间点t2时，第一个帧图像的起始信号STV的上升沿到来时，触发信号XAO、使能信号EN与输入至源极驱动器122的共电极电压Vcom皆变为第二触发电平(例如是低电平)，此时栅极控制器121可传送栅极信号通过栅极线G依序导通第一开关元件T1～TN，且使能信号EN控制源极驱动器122使对应的第一帧图像的多个数据电压通过多条数据线D1～DN、多个第一开关元件T1～TN传送至多个像素电极P1，使显示面板11可正常显示影像画面。
综上所述，通过上述的液晶显示装置及其驱动方法，使得本申请不仅控制简单，成本低，而且也可完全消除液晶显示装置开机瞬间的闪白现象，提高液晶显示装置的画面质量。
以上内容是结合具体的实施方式对本申请所作的进一步详细说明，不能认定本申请的具体实施只局限于这些说明。对于本申请所属技术领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本申请的保护范围。

Claims (20)

  1. 一种液晶显示装置的驱动方法，所述液晶显示装置具有一显示面板及一驱动电路，所述驱动电路与所述显示面板电性连接，所述显示面板包括多个像素，所述多个像素分别具有多个第一开关元件、多个像素电极与一共电极，所述驱动电路通过所述多个第一开关元件分别与所述多个像素电极电性连接，所述方法包括：
    当开机瞬间且一触发信号于一第一时间点使所述多个第一开关元件导通时，所述驱动电路使一共电极电压于所述第一时间点传送至所述多个像素电极；以及
    当在所述第一时间点之后的一第二时间点接收到第一个帧图像的一起始信号的上升沿时，所述驱动电路使多个数据电压通过所述多个第一开关元件传送至所述多个像素电极，使所述多个像素显示影像。
  2. 如权利要求1所述的方法，其中，所述驱动电路包括一源极驱动器及一共电极电压驱动电路，所述共电极电压驱动电路包括多个第二开关元件、一第三开关元件与一逻辑控制电路，所述多个第二开关元件对应设置于多条数据线上，所述源极驱动器通过所述多条数据线、所述多个第二开关元件、所述多个第一开关元件分别与所述多个像素电极电性连接。
  3. 如权利要求2所述的方法，其中，当所述触发信号于所述第一时间点为一第一触发电平时，所述第三开关元件导通，且所述逻辑控制电路控制所述多个第二开关元件断开，所述源极驱动器使所述共电极电压通过所述多条数据线、所述第三开关元件与所述多个第一开关元件分别传送至所述多个像素电极。
  4. 如权利要求3所述的方法，其中，当所述触发信号为一第二触发电平而使所述多个第二开关元件导通时，所述第三开关元件断开，所述源极驱动器将所述多个数据电压通过所述多条数据线、所述多个第二开关元件与所述多个第一开关元件传送至所述多个像素电极。
  5. 如权利要求2所述的方法，其中，所述逻辑控制电路为非门。
  6. 如权利要求1所述的方法，其中，所述驱动电路具有一栅极驱动器与一源极驱动器，所述栅极驱动器与所述多个像素的所述多个第一开关元件电性连接，所述源极驱动器通过多条数据线与所述多个第一开关元件电性连接。
  7. 如权利要求6所述的方法，其中，当所述触发信号于所述第一时间点为一第一触发电平时，所述栅极驱动器控制所述多个第一开关元件导通，一使能信号控制所述源极驱动器使所述共电极电压于所述第一时间点通过所述多条数据线传送至所述多个像素电极。
  8. 如权利要求7所述的方法，其中，当于所述第二时间点时，所述使能信号控制所述源极驱动器使所述多个数据电压通过所述多条数据线传送至所述多个像素电极。
  9. 如权利要求1所述的方法，其中，所述驱动电路包括一栅极驱动器，所述触发信号在所述第一时间点还使所述栅极驱动器通过多条栅极线控制所述多个第一开关元件导通。
  10. 如权利要求1所述的方法，其中，于所述第二时间点之前，所述多个像素的像素电压为零。
  11. 一种液晶显示装置，包括：
    一显示面板，包括多个像素，所述多个像素分别具有多个第一开关元件、多个像素电极与一共电极；以及
    一驱动电路，与所述显示面板电性连接，所述驱动电路通过所述多个第一开关元件分别与所述多个像素电极电性连接；
    其中，当开机瞬间且一触发信号于一第一时间点使所述多个第一开关元件导通时，所述驱动电路使一共电极电压于所述第一时间点传送至所述多个像素电极；当在所述第一时间点之后的一第二时间点接收到第一个帧图像的一起始信号的上升沿时，所述驱动电路使多个数据电压通过所述多个第一开关元件传送至所述多个像素电极，使所述多个像素显示影像。
  12. 如权利要求11所述的液晶显示装置，其中，所述驱动电路包括一源极驱动器及一共电极电压驱动电路，所述共电极电压驱动电路包括多个第二开关元件、一第三开关元件与一逻辑控制电路，所述多个第二开关元件对应设置于多条数据线上，所述源极驱动器通过所述多条数据线、所述多个第二开关元件、所述多个第一开关元件分别与所述多个像素电极电性连接。
  13. 如权利要求12所述的液晶显示装置，其中，当所述触发信号于所述第一时间点为一第一触发电平时，所述第三开关元件导通，且所述逻辑控制电路控制所述多个第二开关元件断开，所述源极驱动器使所述共电极电压通 过所述多条数据线、所述第三开关元件与所述多个第一开关元件分别传送至所述多个像素电。
  14. 如权利要求13所述的液晶显示装置，其中，当所述触发信号为一第二触发电平而使所述多个第二开关元件导通时，所述第三开关元件断开，所述源极驱动器将所述多个数据电压通过所述多条数据线、所述多个第二开关元件与所述多个第一开关元件传送至所述多个像素电极。
  15. 如权利要求12所述的液晶显示装置，其中，所述逻辑控制电路为非门。
  16. 如权利要求11所述的液晶显示装置，其中，所述驱动电路具有一栅极驱动器与一源极驱动器，所述栅极驱动器与所述多个像素的所述多个第一开关元件电性连接，所述源极驱动器通过多条数据线与所述多个第一开关元件电性连接。
  17. 如权利要求16所述的液晶显示装置，其中，当所述触发信号于所述第一时间点为一第一触发电平时，所述栅极驱动器控制所述多个第一开关元件导通，一使能信号控制所述源极驱动器使所述共电极电压于所述第一时间点通过所述多条数据线传送至所述多个像素电极。
  18. 如权利要求17所述的液晶显示装置，其中，当于所述第二时间点时，所述使能信号控制所述源极驱动器使所述多个数据电压通过所述多条数据线传送至所述多个像素电极。
  19. 如权利要求11所述的液晶显示装置，其中，于所述第二时间点之前，所述多个像素的像素电压为零。
  20. 一种液晶显示装置，包括：
    一显示面板，包括多个像素，所述多个像素分别具有多个第一开关元件、多个像素电极与一共电极；以及
    一驱动电路，与所述显示面板电性连接，所述驱动电路通过所述多个第一开关元件分别与所述多个像素电极电性连接；
    其中，当开机瞬间且一触发信号于一第一时间点使所述多个第一开关元件导通时，所述驱动电路使一共电极电压于所述第一时间点传送至所述多个像素电极；当在所述第一时间点之后的一第二时间点接收到第一个帧图像的一起始信号的上升沿时，所述驱动电路使多个数据电压通过所述多个第一开 关元件传送至所述多个像素电极，使所述多个像素显示影像；
    其中，所述驱动电路包括一源极驱动器及一共电极电压驱动电路，所述共电极电压驱动电路包括多个第二开关元件、一第三开关元件与一逻辑控制电路，所述多个第二开关元件对应设置于多条数据线上，所述源极驱动器通过所述多条数据线、所述多个第二开关元件、所述多个第一开关元件分别与所述多个像素电极电性连接；
    当所述触发信号于所述第一时间点为一第一触发电平时，所述第三开关元件导通，且所述逻辑控制电路控制所述多个第二开关元件断开，所述源极驱动器使所述共电极电压通过所述多条数据线、所述第三开关元件与所述多个第一开关元件分别传送至所述多个像素电；
    当所述触发信号为一第二触发电平而使所述多个第二开关元件导通时，所述第三开关元件断开，所述源极驱动器将所述多个数据电压通过所述多条数据线、所述多个第二开关元件与所述多个第一开关元件传送至所述多个像素电极。
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CN105632435A (zh) * 2016-01-05 2016-06-01 京东方科技集团股份有限公司 开关机残像消除电路以及消除开关机残像的方法
CN108182918A (zh) * 2018-01-03 2018-06-19 惠科股份有限公司 液晶显示装置及其驱动方法

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