CN116189627A - Display panel driving method and device and display panel - Google Patents

Display panel driving method and device and display panel Download PDF

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Publication number
CN116189627A
CN116189627A CN202211003044.0A CN202211003044A CN116189627A CN 116189627 A CN116189627 A CN 116189627A CN 202211003044 A CN202211003044 A CN 202211003044A CN 116189627 A CN116189627 A CN 116189627A
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China
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driving
display
display panel
voltage
positive
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Chinese (zh)
Inventor
李琰
郑浩旋
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HKC Co Ltd
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HKC Co Ltd
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Priority to CN202211003044.0A priority Critical patent/CN116189627A/en
Publication of CN116189627A publication Critical patent/CN116189627A/en
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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
    • G09G3/3648—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
    • 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
    • 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

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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)
  • Liquid Crystal Display Device Control (AREA)

Abstract

The invention discloses a driving method and device of a display panel and the display panel, wherein the method comprises the following steps: the method comprises the steps of calculating positive and negative gray level difference values of sub-pixels in a driving column through a time sequence controller to obtain positive and negative gray level difference value results, judging whether horizontal crosstalk exists in coupling of display voltages based on the positive and negative gray level difference value results, obtaining a driving mode according to the positive and negative gray level difference value results if the horizontal crosstalk exists in coupling of the display voltages, restoring the display voltages to a preset voltage according to the driving mode, improving the horizontal crosstalk based on the preset voltage, and realizing that the display voltages are quickly restored to the voltage set by a reference voltage through pulling up or pulling down operation so as to weaken or even eliminate the horizontal crosstalk, and further effectively improving the situation of polarity asymmetry of a display picture.

Description

Display panel driving method and device and display panel
Technical Field
The present invention relates to the field of liquid crystal display panels, and in particular, to a driving method for a display panel, a driving device for a display panel, and a display panel.
Background
In the conventional TFT LCD (Thin Film Transistor Liquid Crystal Display, thin film transistor-liquid crystal display) structure, in addition to the liquid crystal capacitance between the upper common electrode and the TFT substrate, there is a parasitic capacitance formed between the data line and the scan line metal and the upper common electrode, when the voltage of the data line varies, the voltage of the upper common electrode is abnormally affected by the parasitic capacitance between the data line and the upper common electrode, if the voltage of the upper common electrode cannot be quickly recovered to the voltage set by the reference power supply at this time, the horizontal crosstalk phenomenon of the display panel at this time may occur.
Disclosure of Invention
The present invention provides a driving method of a display panel, a driving device of a display panel and a display panel, and aims to solve the technical problem that when the voltage of a data line is changed, the changed voltage can cause abnormal influence on the voltage of an upper plate common electrode through parasitic capacitance between the data line and the upper plate common electrode, thereby causing horizontal crosstalk of the display panel.
In order to achieve the above object, the present invention provides a driving method of a display panel, the driving method of the display panel including the steps of:
calculating positive and negative gray scale difference values of the sub-pixels in the driving columns through the time sequence controller to obtain positive and negative gray scale difference value results;
judging whether horizontal crosstalk exists in the coupling of the display voltage or not based on the positive and negative gray level difference results;
if the horizontal crosstalk exists in the coupling of the display voltage, a driving mode is obtained according to the positive and negative gray level difference value result;
and restoring the display voltage to a preset voltage according to the driving mode, and driving the display panel based on the preset voltage through a driving chip.
Optionally, the step of reverting the display voltage to a preset voltage according to the driving mode includes:
correspondingly driving the opening degree of the transistor units connected with the driving columns according to the driving mode;
and restoring the display voltage to the preset voltage based on the opening degree.
Optionally, the step of reverting the display voltage to the preset voltage based on the opening degree includes:
and based on the opening degree, carrying out pull-up or pull-down operation on the display voltage through positive and negative channels of a network source route until the display voltage returns to the preset voltage.
Optionally, the step of improving the horizontal crosstalk by the driving chip based on the preset voltage includes:
and receiving the preset voltage through the driving chip, and controlling the display voltage output to the display panel based on the received preset voltage so as to improve the horizontal crosstalk.
Optionally, after the step of determining whether there is horizontal crosstalk in the coupling of the display voltages, the method further includes:
and if the coupling of the display voltage does not have horizontal crosstalk, the driving mode is not obtained according to the positive and negative gray level difference value result.
The invention also provides a driving device of the display panel, which comprises a time sequence controller and a driver, wherein the time sequence controller is connected with the driver;
the time sequence controller is used for calculating positive and negative gray scale difference values of the sub-pixels in the driving columns to obtain positive and negative gray scale difference value results, judging whether horizontal crosstalk exists in the coupling of the display voltage or not based on the positive and negative gray scale difference value results, and obtaining a driving mode according to the positive and negative gray scale difference value results if the horizontal crosstalk exists in the coupling of the display voltage;
the driver is used for reverting the display voltage to a preset voltage according to the driving mode and driving the display panel based on the preset voltage through the driving chip.
Optionally, the driving device of the display panel further comprises a transistor unit, a driving column and a network source route positive and negative channel;
the transistor unit is connected with the driving column through the positive and negative channels of the network source route, and the positive and negative channels of the network source route are connected with the driving column.
Optionally, the transistor unit includes a first transistor module and a second transistor module, where a plurality of transistors connected in series are respectively disposed inside the first transistor module and the second transistor module, a transistor switch of the first transistor module is disposed at a junction point between anodes of the plurality of transistors connected in series and a serial line, and a transistor switch of the second transistor is disposed at a junction point between cathodes of the plurality of transistors connected in series and the serial line;
the cathode of the first transistor module and the anode of the second transistor module are connected to the positive and negative channels of the network source route.
Optionally, the driving columns are provided with columns of sub-pixel columns, the polarity of the sub-pixel columns being opposite to the polarity adjacent thereto.
In addition, in order to achieve the above object, the present invention also provides a display panel including a display area and a non-display area disposed at the periphery of the display area, a driving device of the display panel as described above being disposed on the non-display area, and a processor on the non-display area implementing the steps of the driving method of the display panel as described above when executing the driving device of the display panel.
The invention provides a driving method of a display panel, which is characterized in that a time sequence controller calculates positive and negative gray level difference values of sub-pixels in a driving column, whether the display voltage is a voltage set by deviating from a reference voltage or not is judged based on the obtained positive and negative gray level difference value results, namely, whether the crosstalk exists in the display panel due to the coupling of the current display voltage or not is judged by the time sequence controller, when the horizontal crosstalk exists in the display panel due to the display voltage at the moment, a corresponding driving mode is obtained through the positive and negative gray level difference values, and the display voltage is pulled up or pulled down through the driving mode, so that the display voltage is quickly returned to the voltage set by the reference voltage, and the effect of reducing or even eliminating the horizontal crosstalk is achieved.
Drawings
FIG. 1 is a schematic diagram of a terminal structure of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flow chart of an embodiment of a driving method of a display panel according to the present invention;
FIG. 3 is a schematic diagram showing connection between a timing controller and a driver of a display panel driving apparatus according to the present invention;
FIG. 4 is a schematic circuit diagram of a driving device of a display panel according to the present invention;
FIG. 5 is a schematic diagram showing the positions of a CF plate and a TFT substrate in the prior art;
fig. 6 is a schematic diagram of a display area and a non-display area in a display panel.
Reference numerals illustrate:
reference numerals Name of the name
10 Time sequence controller
20 Driver(s)
L1-L6 Drive column
S1-S6 Positive and negative channels of network source route
30 First transistor module
40 Second transistor module
K Transistor switch
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The main solutions of the embodiments of the present invention are: the method comprises the steps of calculating positive and negative gray level differences of sub-pixels in a driving column through a time sequence controller, obtaining positive and negative gray level difference results, judging whether the current display voltage causes crosstalk of a display panel or not based on the positive and negative gray level difference results, obtaining a corresponding driving mode through the positive and negative gray level difference results after judging that the current display voltage causes the crosstalk of the display panel, and pulling up or pulling down the current display voltage based on the driving mode, so that the current display voltage is recovered to a preset voltage, and improving the horizontal crosstalk of the display panel.
Based on the current TFT LCD architecture, the voltage of the data line is related to the voltage of the upper plate common electrode, and the voltage of the upper plate common electrode is related to the display voltage, when the voltage of the data line varies, the parasitic capacitance between the data line and the upper plate common electrode can cause abnormal influence on the voltage of the upper plate common electrode, so that the display panel has crosstalk phenomenon.
The invention provides a solution, wherein the effect of automatically checking the display quality of the display panel in real time is realized by acquiring the positive and negative gray level difference values of whether the coupling of the current display voltage can cause the horizontal crosstalk of the display panel or not through the time sequence controller, and the corresponding driving mode for pulling up or down the display voltage is acquired based on the positive and negative gray level difference values when the current display voltage is judged to cause the crosstalk of the display panel, so that the display voltage can be quickly returned to the voltage set by the reference voltage, and the horizontal crosstalk phenomenon of the display panel is further effectively improved.
As shown in fig. 1, fig. 1 is a schematic diagram of a terminal structure of a hardware running environment according to an embodiment of the present invention.
In the driving method of the display panel according to the embodiment of the present invention, the application carrier is a display panel, as shown in fig. 1, the display panel may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display area (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
Optionally, the display panel may further include a camera, an RF (Radio Frequency) circuit, a sensor, an audio circuit, a WiFi module, and the like. Among other sensors, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display screen according to the brightness of ambient light, and a proximity sensor that may turn off the display screen and/or the backlight when the mobile terminal moves to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and the direction when the mobile terminal is stationary, and the mobile terminal can be used for recognizing the gesture of the mobile terminal (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; of course, the mobile terminal may also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and the like, which are not described herein.
It will be appreciated by those skilled in the art that the display panel structure shown in fig. 1 is not limiting of the display panel and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and a driving device of a display panel may be included in a memory 1005 as one type of computer storage medium.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be used to call up the driving means of the display panel stored in the memory 1005 and perform the following operations:
calculating positive and negative gray scale difference values of the sub-pixels in the driving columns through the time sequence controller to obtain positive and negative gray scale difference value results;
judging whether horizontal crosstalk exists in the coupling of the display voltage or not based on the positive and negative gray level difference results;
if the horizontal crosstalk exists in the coupling of the display voltage, a driving mode is obtained according to the positive and negative gray level difference value result;
and restoring the display voltage to a preset voltage according to the driving mode, and driving the display panel based on the preset voltage through a driving chip.
Further, the processor 1001 may call the driving device of the display panel stored in the memory 1005, and further perform the following operations:
the step of returning the display voltage to a preset voltage according to the driving mode comprises the following steps: correspondingly driving the opening degree of the transistor units connected with the driving columns according to the driving mode;
and restoring the display voltage to the preset voltage based on the opening degree.
Further, the processor 1001 may call the driving device of the display panel stored in the memory 1005, and further perform the following operations:
the step of returning the display voltage to the preset voltage based on the opening degree comprises the following steps: and based on the opening degree, carrying out pull-up or pull-down operation on the display voltage through positive and negative channels of a network source route until the display voltage returns to the preset voltage.
Further, the processor 1001 may call the driving device of the display panel stored in the memory 1005, and further perform the following operations:
the step of improving the horizontal crosstalk based on the preset voltage by the driving chip includes: and receiving the preset voltage through the driving chip, and controlling the display voltage output to the display panel based on the received preset voltage so as to improve the horizontal crosstalk.
Further, the processor 1001 may call the driving device of the display panel stored in the memory 1005, and further perform the following operations:
after the step of judging whether the coupling of the display voltage has horizontal crosstalk, if the coupling of the display voltage does not have horizontal crosstalk, the driving mode is not obtained according to the positive and negative gray level difference value result.
Referring to fig. 2, an embodiment of the present invention provides a driving method of a display panel, including:
step S10, calculating positive and negative gray level difference values of the sub-pixels in the driving columns through a time sequence controller to obtain positive and negative gray level difference value results;
step S20, judging whether horizontal crosstalk exists in the coupling of the display voltage or not based on the positive and negative gray level difference results;
as shown in fig. 5, the positions of the CF (Color Framing) plate and the TFT substrate are schematically shown, and besides the liquid crystal capacitance, parasitic capacitance formed between the data line and the scan line metal and the upper common electrode is also formed between the upper common electrode and the TFT substrate (the lower plate in fig. 5), and when the voltage of the data line varies, the voltage of the upper common electrode is abnormally affected by the parasitic capacitance between the data line and the upper common electrode, and if the voltage of the upper common electrode cannot be quickly returned to the voltage set by the reference power supply at this time, the crosstalk phenomenon exists in the display panel at this time.
Based on the above phenomena, in this embodiment, a driving Column (Column) is illustrated under a flip pixel architecture, the polarity of a sub-pixel in the driving Column is opposite to that of a neighboring sub-pixel, it is assumed that, by taking 8 bits of each sub-pixel, that is, 256 gray levels as an example, the sub-pixels in each row are respectively calculated by a timing controller, that is, the positive and negative gray level differences of the sub-pixels are subjected to addition and subtraction operation, when the positive and negative gray level differences result is 0 gray level, positive polarity and negative polarity in the sub-pixels in the driving Column are offset, and the coupling is low, that is, the display voltage at this time will not cause horizontal crosstalk to the display panel; when the positive polarity or the negative polarity of the sub-pixel in the obtained positive and negative gray scale difference result display driving column is 0 gray scale, the corresponding negative polarity or positive polarity is 256 gray scales, which indicates that the display voltage at the moment will fluctuate to a certain polarity direction to the greatest extent, for example, when the positive polarity of the sub-pixel in the obtained positive and negative gray scale difference result display driving column is 0 gray scale, the corresponding negative polarity is 256 gray scale, which indicates that the display voltage at the moment fluctuates to the greatest extent, the fluctuation condition at the moment causes abnormal display of the display panel, such as horizontal crosstalk phenomenon, and based on the fact, the time sequence controller determines that the coupling of the display voltage at the moment has horizontal crosstalk condition to the display panel.
The time schedule controller adopted in the embodiment can monitor the positive and negative gray level difference values of the sub-pixels in the driving columns, and calculate based on the monitoring, so that the effect of automatically monitoring the display quality of the display panel in real time during the power-on period of the display panel is achieved, the condition that monitoring deviation is caused by inconvenience existing in manual monitoring and effective display quality monitoring cannot be achieved is avoided.
In addition, the coupling is a software measure, in this embodiment, the relative degree of the positive and negative voltages input to the display panel of the display voltage, and because the display voltage input to the display panel is related to the gray scale of positive polarity and negative polarity in the sub-pixels in the driving columns, the coupling in this embodiment may also refer to the relative degree of positive polarity and negative polarity in the sub-pixels in the driving columns, and the lower the coupling, the lower the case of representing horizontal crosstalk.
The driving columns under the flip pixel architecture are exemplified in the embodiment, because the scanning direction of the display panel is opposite, and the incoming display voltage direction is also positive or negative, which is more favorable for explanation of the embodiment.
Optionally, after the step of determining whether the coupling of the display voltages has horizontal crosstalk in step S20, the method further includes:
step S21, if the coupling of the display voltage does not have horizontal crosstalk, the driving mode is not obtained according to the positive and negative gray level difference result.
If the positive and negative polarities in the sub-pixels in the driving columns are offset when the positive and negative gray level difference result is 0 gray level, the coupling is low, that is, the display voltage flowing into the display panel meets the requirement of the preset voltage, the situation of horizontal crosstalk to the display panel does not exist, so that the time schedule controller does not need to obtain the driving mode based on the positive and negative gray level difference result to adjust the current display voltage.
Step S30, if the horizontal crosstalk exists in the coupling of the display voltage, a driving mode is obtained according to the positive and negative gray level difference result;
if the obtained positive and negative gray scale difference results show that the positive or negative polarity of the sub-pixels in the driving column is 0 gray scale, and the corresponding negative or positive polarity is 256 gray scale, it is indicated that the display voltage at the moment will fluctuate to a certain polarity direction to the greatest extent, and the coupling is high, that is, the display voltage flowing into the display panel at the moment does not meet the requirement of the preset voltage, then the crosstalk exists in the display panel at the moment, and based on the crosstalk, the time schedule controller at the moment can obtain the corresponding driving mode according to the positive and negative gray scale difference results.
In this embodiment, the driving modes are divided into four driving modes, each driving mode corresponds to a different voltage adjustment degree, for example, (1) when the positive and negative gray level difference result is less than one fourth of the theoretical maximum value, the timing controller outputs a driving mode of "00" to the driver; (2) when the positive and negative gray level difference result is between one fourth and one half of the theoretical maximum value, the time sequence controller outputs a driving mode of '01' to the driver; (3) when the positive and negative gray level difference results are between one half and three quarters of the theoretical maximum value, the time sequence controller outputs a driving mode of 10 to the driver; (4) when the positive and negative gray level difference results are between three-fourths and one of the theoretical maximum, the timing controller outputs the driving mode of 11 to the driver.
In this embodiment, the theoretical maximum value is a maximum gray level difference of 256×150, which is a theoretical maximum value, because the theoretical maximum value is one hundred sub-pixels in each row, and one hundred fifty positive polarity and one hundred ten negative polarity are included.
And S40, reverting the display voltage to a preset voltage according to the driving mode, and driving the display panel based on the preset voltage through a driving chip.
Taking the case in (1) as an example, when the positive and negative gray level difference value calculated by the timing controller is less than one fourth of 256×150, the timing controller will output a driving mode of "00" to the driver, and the driver returns the display voltage to the preset voltage according to the received driving mode of "00", and because the display voltage is output to the driving chip, the driving chip can drive the image displayed on the display panel based on the display voltage, when the display voltage returns to the preset voltage, the display panel is driven by the display voltage at this time, so that the phenomenon of horizontal crosstalk of the display panel is not caused, that is, the horizontal crosstalk in the display panel is weakened or even eliminated, thereby achieving the purpose of improving the horizontal crosstalk.
The preset voltage is a voltage set based on the reference voltage, and is specifically set according to the type of the display panel used.
Optionally, the step of reverting the display voltage to the preset voltage in step S40 according to the driving mode includes:
step S41, correspondingly driving the opening degree of the transistor unit connected with the driving column according to the driving mode;
and step S42, reverting the display voltage to the preset voltage based on the opening degree.
Taking the case (4) as an example, when the positive and negative gray level difference value calculated by the timing controller is between 256×150 and one half, the timing controller outputs an "11" driving mode to the driver, and the driver turns on a large number of transistors in the transistor unit (for example, 12 transistors in the transistor unit are turned on, 10 transistors in the transistor unit are turned on) according to the received "11" driving mode, and directly affects the display voltage based on the turn-on degree of the transistors in the transistor unit, so that the display voltage is quickly returned to the preset voltage, and because the display voltage is output to the display panel, when the display voltage is returned to the preset voltage, the horizontal crosstalk in the display panel at the moment is reduced or even eliminated, so as to achieve the purpose of improving the horizontal crosstalk.
Optionally, the step of reverting the display voltage to the preset voltage based on the opening degree in step S42 includes:
step S43, based on the opening degree, performing a pull-up or pull-down operation on the display voltage through a network Source line (Source line) positive and negative channel until the display voltage returns to the preset voltage.
Taking the case of (1) as an example, when the positive and negative gray level difference value calculated and counted by the timing controller is less than one fourth of 256×150, the timing controller at this time outputs a driving mode of "00" to the driver, and the driver turns on a small amount of transistors in the transistor units according to the received driving mode of "00" (for example, when 12 transistors exist in the transistor units, 2 transistors are turned on), because the transistor units are connected with the positive and negative channels of the network source line, the turn-on degree of the transistors inside the transistor units directly affects the positive and negative channels of the network source line, and then the display voltage is returned to the preset voltage through the positive and negative channels of the network source line, and because the display voltage is output to the display panel, when the display voltage is returned to the preset voltage, the level crosstalk in the display panel at this time is weakened or even eliminated, so as to achieve the purpose of improving the level crosstalk.
Optionally, the step of improving the horizontal crosstalk by the driving chip based on the preset voltage in step S40 includes:
step S43, receiving the preset voltage by the driving chip, and controlling the display voltage output to the display panel based on the received preset voltage, so as to improve the horizontal crosstalk.
According to the driver in the prior art, the stability of the display screen on the display panel is controlled based on the driving chip, and whether the output of the driving chip is stable or not is related to the received display voltage.
In this embodiment, the time sequence controller calculates the positive and negative gray level differences of the sub-pixels in the driving columns, and based on the obtained positive and negative gray level differences, determines whether the display voltage has a voltage set by deviating from the reference voltage at this time, that is, whether the coupling of the current display voltage causes crosstalk to the display panel, and when the time sequence controller determines that the display voltage at this time has a crosstalk causing condition to the display panel, acquires a corresponding driving mode through the positive and negative gray level differences, and performs an operation of pulling up or down the display voltage through the driving mode, so that the display voltage is quickly restored to the voltage set by the reference voltage, thereby effectively improving the display crosstalk phenomenon of the display panel.
Referring to fig. 3, the present invention provides a driving apparatus of a display panel, the driving apparatus of the display panel including a timing controller 10 and a driver 20, the timing controller 10 being connected to the driver 20;
the timing controller 10 is configured to calculate positive and negative gray scale differences of the sub-pixels in the driving columns to obtain positive and negative gray scale difference results, determine whether horizontal crosstalk exists in the coupling of the display voltages based on the positive and negative gray scale difference results, and obtain a driving mode according to the positive and negative gray scale difference results if the horizontal crosstalk exists in the coupling of the display voltages;
the driver 20 is configured to restore the display voltage to a preset voltage according to the driving mode, and drive the display panel based on the preset voltage through a driving chip.
Specifically, referring to fig. 4, the driving device of the display panel further includes a transistor unit, a driving column, and a network source line positive and negative channel (i.e., channels S1 to S6 in fig. 4);
the transistor unit is connected with the driving column through the positive and negative channels of the network source route, and the positive and negative channels of the network source route are connected with the driving column.
As shown in the connection diagram of fig. 4, the transistor unit is connected to the positive and negative channels of the network source line, and the positive and negative channels of the network source line are connected to the driving column, when the transistors in the transistor unit correspondingly change the on state, the positive and negative channels of the network source line receive the change state, and the positive and negative polarities of the sub-pixels in the driving column are adjusted based on the change state, so as to adjust the display voltage, thereby achieving the purpose of adjusting the display voltage to a preset voltage.
Further, the transistor unit includes a first transistor module 30 and a second transistor module 40, where a plurality of transistors connected in series are respectively disposed inside the first transistor module 30 and the second transistor module 40, a transistor switch of the first transistor module 30 is disposed at a junction point between an anode of the plurality of transistors connected in series and a serial line, and a transistor switch of the second transistor is disposed at a junction point between a cathode of the plurality of transistors connected in series and the serial line, and as shown in fig. 4, a "K" is labeled in the drawing, that is, a switch of one of the transistors of the first transistor module 30;
the negative electrode of the first transistor module 30 and the positive electrode of the second transistor module 40 are connected to the positive and negative channels of the network source line.
Further, the driving columns are provided with a plurality of columns of sub-pixel columns, the polarities of the sub-pixel columns are opposite to the polarities of the adjacent sub-pixel columns, taking the driving columns in fig. 4 as examples (i.e. the square columns marked with "+" and "-" in fig. 4, each square corresponds to one sub-pixel), and each sub-pixel is connected with the positive and negative channels of the network source route.
In addition, an embodiment of the present invention further provides a display panel, where the display panel includes a display area and a non-display area disposed at a periphery of the display area, and the driving device of the display panel is disposed on the non-display area, and when the processor on the non-display area executes the driving device of the display panel, the step of the driving method of the display panel is implemented.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (10)

1. A driving method of a display panel, characterized in that the driving method of the display panel comprises the steps of:
calculating positive and negative gray scale difference values of the sub-pixels in the driving columns through the time sequence controller to obtain positive and negative gray scale difference value results;
judging whether horizontal crosstalk exists in the coupling of the display voltage or not based on the positive and negative gray level difference results;
if the horizontal crosstalk exists in the coupling of the display voltage, a driving mode is obtained according to the positive and negative gray level difference value result;
and restoring the display voltage to a preset voltage according to the driving mode, and driving the display panel based on the preset voltage through a driving chip.
2. The driving method of a display panel according to claim 1, wherein the step of returning the display voltage to a preset voltage according to the driving mode comprises:
correspondingly driving the opening degree of the transistor units connected with the driving columns according to the driving mode;
and restoring the display voltage to the preset voltage based on the opening degree.
3. The driving method of a display panel according to claim 2, wherein the step of returning the display voltage to the preset voltage based on the opening degree comprises:
and based on the opening degree, carrying out pull-up or pull-down operation on the display voltage through positive and negative channels of a network source route until the display voltage returns to the preset voltage.
4. The driving method of a display panel according to claim 1, wherein the step of improving the horizontal crosstalk by the driving chip based on the preset voltage comprises:
and receiving the preset voltage through the driving chip, and controlling the display voltage output to the display panel based on the received preset voltage so as to improve the horizontal crosstalk.
5. The method of driving a display panel according to claim 1, wherein after the step of determining whether the coupling of the display voltages has the horizontal crosstalk, further comprising:
and if the coupling of the display voltage does not have horizontal crosstalk, the driving mode is not obtained according to the positive and negative gray level difference value result.
6. A driving device of a display panel, wherein the driving device of a display panel is used for the driving method of a display panel according to any one of claims 1 to 5, the driving device of a display panel comprising a timing controller and a driver, the timing controller being connected to the driver;
the time sequence controller is used for calculating positive and negative gray scale difference values of the sub-pixels in the driving columns to obtain positive and negative gray scale difference value results, judging whether horizontal crosstalk exists in the coupling of the display voltage or not based on the positive and negative gray scale difference value results, and obtaining a driving mode according to the positive and negative gray scale difference value results if the horizontal crosstalk exists in the coupling of the display voltage;
the driver is used for reverting the display voltage to a preset voltage according to the driving mode and driving the display panel based on the preset voltage through the driving chip.
7. The display panel driving apparatus according to claim 5, further comprising a transistor unit, a driving column, and a network source line positive and negative channel;
the transistor unit is connected with the driving column through the positive and negative channels of the network source route, and the positive and negative channels of the network source route are connected with the driving column.
8. The driving device of a display panel according to claim 7, wherein the transistor unit includes a first transistor module and a second transistor module, wherein a plurality of transistors connected in series are respectively disposed inside the first transistor module and the second transistor module, a transistor switch of the first transistor module is disposed at a junction point of anodes of the plurality of transistors connected in series and a serial line inside the first transistor module, and a transistor switch of the second transistor is disposed at a junction point of cathodes of the plurality of transistors connected in series and the serial line inside the second transistor module;
the cathode of the first transistor module and the anode of the second transistor module are connected to the positive and negative channels of the network source route.
9. The driving device of the display panel according to claim 8, wherein the driving columns are provided with columns of sub-pixel columns having a polarity opposite to a polarity adjacent thereto.
10. A display panel comprising a display area and a non-display area arranged at the periphery of the display area, wherein the driving means of the display panel according to any one of claims 6 to 9 is arranged on the non-display area, and a processor on the non-display area implements the steps of the driving method of the display panel according to any one of claims 1 to 5 when executing the driving means of the display panel.
CN202211003044.0A 2022-08-19 2022-08-19 Display panel driving method and device and display panel Pending CN116189627A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116798378A (en) * 2023-08-23 2023-09-22 惠科股份有限公司 Liquid crystal display method, electronic device, and storage medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116798378A (en) * 2023-08-23 2023-09-22 惠科股份有限公司 Liquid crystal display method, electronic device, and storage medium
CN116798378B (en) * 2023-08-23 2023-10-24 惠科股份有限公司 Liquid crystal display method, electronic device, and storage medium

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