CN113284470A - Common voltage compensation method and liquid crystal display device - Google Patents
Common voltage compensation method and liquid crystal display device Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
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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
- G09G3/3655—Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
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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
- 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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- 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
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Abstract
The application provides a public voltage compensation method and a liquid crystal display device, and relates to the technical field of display, wherein the public voltage compensation method comprises the following steps: when the driving mode of the display picture is dot inversion, column 2 dot inversion or row 2 dot inversion, determining whether the display picture belongs to a first type of display picture; when the display picture does not belong to the first type of display picture, determining the number of first target sub-pixels and second target sub-pixels in each row of sub-pixels; and when the number of the first target sub-pixels is not equal to that of the second target sub-pixels, determining and outputting corresponding common voltage compensation values according to the data voltages of the plurality of first target sub-pixels and the data voltages of the plurality of second target sub-pixels. The method and the device judge whether the number of the positive and negative sub-pixels needs to be determined or not by determining the driving mode and the type of the display picture, and then determine the corresponding common voltage compensation value through the data voltage of the positive and negative sub-pixels and compensate, so that the compensated display picture can be normally displayed.
Description
Technical Field
The application belongs to the technical field of display, and particularly relates to a common voltage compensation method and a liquid crystal display device.
Background
A Liquid Crystal Display (LCD) panel has the advantages of low radiation, small size, and low power consumption, and is widely used in various electronic devices such as notebook computers and televisions.
At present, the liquid crystal display panel uses an electric field formed by a common electrode and a pixel electrode to control liquid crystal molecules to deflect, so as to achieve the purpose of displaying pictures with different gray scales.
However, when the lcd panel displays a picture, because the coupling capacitor exists between the common electrode and the data line, when the data voltage on the data line changes suddenly, the voltage at both ends of the coupling capacitor also changes suddenly, so that the common voltage of the common electrode fluctuates with the capacitive coupling effect and is difficult to keep stable, and further, the voltage difference between the common electrode and the pixel electrode is abnormal, which causes the deviation between the deflection direction and the preset direction of the liquid crystal molecules, so that the display picture has defects of flickering (flicker), green light (greenish), crosstalk (crosstalk), and the like, thereby reducing the display effect and the yield of the product. Thus, the common voltage needs to be compensated.
Disclosure of Invention
The embodiment of the application provides a common voltage compensation method and a liquid crystal display device, whether the number of positive and negative sub-pixels needs to be determined or not is judged by determining the driving mode and the type of a display picture, and then a corresponding common voltage compensation value is determined and compensated through the data voltage of the positive and negative sub-pixels, so that the compensated display picture can be normally displayed.
In order to achieve the purpose, the technical scheme is as follows:
in a first aspect, a common voltage compensation method is provided, which is applied to a liquid crystal display device including a liquid crystal display panel, where the liquid crystal display panel includes a display area, the display area is used for displaying a display picture, and the display area includes a plurality of sub-pixels arranged in an array, and the compensation method includes: when the driving mode of the display picture is dot inversion, column 2 dot inversion or row 2 dot inversion, determining whether the display picture belongs to a first type of display picture; the first type of display picture comprises a full white display picture, a full black display picture and a three-primary-color display picture;
when the display picture does not belong to the first type of display picture, determining the number of first target sub-pixels and second target sub-pixels in each row of sub-pixels; the driving polarity corresponding to the first target sub-pixel is positive, and the driving polarity corresponding to the second target sub-pixel is negative;
and for each row of sub-pixels, when the number of the first target sub-pixels is not equal to that of the second target sub-pixels, determining and outputting a corresponding common voltage compensation value according to the data voltages of the plurality of first target sub-pixels and the data voltages of the plurality of second target sub-pixels.
In the common voltage compensation method provided by the first aspect, whether the number of positive and negative sub-pixels needs to be determined is judged by determining the driving mode of the display picture and the type of the display picture, and when the number of the positive and negative sub-pixels needs to be determined and the determined number is different, the corresponding common voltage compensation value is determined by the data voltages of the positive and negative sub-pixels and compensation is performed, so that the compensated display picture can be normally displayed, and the purpose of solving the problems of crosstalk and the like between pixels is achieved.
In a possible implementation manner of the first aspect, after determining that the display screen does not belong to the first category of display screens, before determining the number of the first target sub-pixels and the second target sub-pixels in each row of sub-pixels, the compensation method further includes:
determining a gray scale corresponding to each sub-pixel aiming at each row of sub-pixels;
and determining the sub-pixel with the gray scale meeting a preset gray scale range as a target sub-pixel, wherein the target sub-pixel comprises the first target sub-pixel and the second target sub-pixel.
In a possible implementation manner of the first aspect, determining and outputting corresponding common voltage compensation values according to data voltages respectively corresponding to the first target sub-pixels and data voltages respectively corresponding to the second target sub-pixels includes:
determining an average value of data voltages of a plurality of the first target sub-pixels as a first voltage for each row of sub-pixels;
determining an average value of data voltages of the plurality of second target subpixels as a second voltage;
determining a voltage difference between the first voltage and the second voltage;
and determining and outputting the corresponding common voltage compensation value according to the voltage difference value.
In a possible implementation manner of the first aspect, the compensation method further includes:
determining a driving mode of the display picture;
wherein the driving manner includes the dot inversion, the column 2 dot inversion, and the row 2 dot inversion.
In a second aspect, there is provided a liquid crystal display device comprising: the liquid crystal display device comprises a liquid crystal display panel, a time sequence controller and a compensation unit; the compensation unit is connected with the time sequence controller and the liquid crystal display panel; the liquid crystal display panel comprises a display area, the display area is used for displaying a display picture and comprises a plurality of sub-pixels arranged in an array;
when the driving mode of the display picture is dot inversion, column 2 dot inversion or row 2 dot inversion, the time sequence controller is used for determining whether the display picture belongs to a first type of display picture; the first type of display picture comprises a full white display picture, a full black display picture and a three-primary-color display picture;
when the display picture does not belong to the first type of display picture, the time sequence controller is used for determining the number of first target sub-pixels and second target sub-pixels in each row of sub-pixels; the driving polarity corresponding to the first target sub-pixel is positive, and the driving polarity corresponding to the second target sub-pixel is negative;
for each row of sub-pixels, when the number of the first target sub-pixels and the number of the second target sub-pixels are not equal, the timing controller is configured to determine a corresponding common voltage compensation value according to the data voltages of the plurality of first target sub-pixels and the data voltages of the plurality of second target sub-pixels, and output the common voltage compensation value to the compensation unit;
the compensation unit is used for compensating the common voltage of the liquid crystal display panel according to the common voltage compensation value.
In a possible implementation manner of the second aspect, for each row of sub-pixels, the timing controller is configured to determine a gray scale corresponding to each sub-pixel; and the target sub-pixel is used for determining the sub-pixel with the gray scale meeting a preset gray scale range as a target sub-pixel, and the target sub-pixel comprises the first target sub-pixel and the second target sub-pixel.
In a possible implementation manner of the second aspect, the determining, by the timing controller, a corresponding common voltage compensation value according to the data voltages respectively corresponding to the first target sub-pixels and the data voltages respectively corresponding to the second target sub-pixels and outputting the common voltage compensation value to the compensation unit includes:
the time sequence controller is used for determining the average value of the data voltages of the first target sub-pixels as a first voltage;
the time sequence controller is used for determining the average value of the data voltages of the second target sub-pixels as a second voltage;
the timing controller is further configured to determine a voltage difference between the first voltage and the second voltage; and the compensation unit is used for determining the corresponding common voltage compensation value according to the voltage difference value and outputting the common voltage compensation value to the compensation unit.
In a possible implementation manner of the second aspect, the timing controller is configured to determine a driving manner of the display screen; wherein the driving manner includes the dot inversion, the column 2 dot inversion, and the row 2 dot inversion.
In a third aspect, a common voltage compensation apparatus is provided for performing the common voltage compensation method as in the first aspect above or any possible implementation manner of the first aspect.
In a fourth aspect, there is provided a computer-readable storage medium having stored therein a computer program or instructions, which, when read and executed by a computer, cause the computer to execute the common voltage compensation method as in the first aspect above or any possible implementation manner of the first aspect.
The embodiment of the application provides a common voltage compensation method and a liquid crystal display device, whether the number of positive and negative sub-pixels needs to be determined or not is judged by determining the driving mode of a display picture and the type of the display picture, and when the number of the positive and negative sub-pixels needs to be determined and is different from the determined number, a corresponding common voltage compensation value is determined and compensated through the data voltage of the positive and negative sub-pixels, so that the compensated display picture can be normally displayed, and the purposes of solving the problems of crosstalk and the like among pixels are achieved.
Drawings
Fig. 1 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of the structure of the sub-pixel of FIG. 1;
FIG. 3 is a schematic diagram of corresponding waveforms of FIG. 2;
FIG. 4 is a waveform diagram corresponding to a row of sub-pixels;
FIG. 5 is a schematic flow chart illustrating a method for compensating a common voltage according to an embodiment of the present disclosure;
FIG. 6 is a polarity diagram of a subpixel;
FIG. 7 is a schematic flowchart of another common voltage compensation method according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of another liquid crystal display device provided in an embodiment of the present application.
Reference numerals:
1-a liquid crystal display device; 10-a liquid crystal display panel; 11-a gate line; 12-a data line; 13-sub-pixel; 14-common electrode lines; 20-a drive unit; 31-a display area; 32-a peripheral zone; 200-a power module; 210-a gate driver; 220-a time schedule controller; 230-a data driver; 240-a compensation unit; vcom — common voltage; vdata-data voltage.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the description of the embodiments of the present application, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present embodiment, "a plurality" means two or more unless otherwise specified.
The directional terms "left", "right", "upper" and "lower" are defined relative to the orientation in which the display assembly is schematically positioned in the drawings, and it is to be understood that these directional terms are relative concepts that are used for descriptive and clarity relative to each other and that may vary accordingly depending on the orientation in which the display assembly is positioned.
With the development of display technology, liquid crystal display technology has been widely applied to various electronic devices. An electronic device that performs display using liquid crystal display technology includes a liquid crystal display device. The embodiment of the application provides a compensation method of a common electrode, which is applied to a liquid crystal display device in electronic equipment.
The electronic device can be a plurality of different types of electronic devices such as a smart phone, a tablet computer, an electronic reader, a vehicle-mounted computer, a navigator, a digital camera, a smart television and a smart wearable device. The embodiments of the present application do not set any limit to this.
Fig. 1 is a schematic diagram showing a structure of a liquid crystal display device in an exemplary technique. As shown in fig. 1, the liquid crystal display device generally includes a liquid crystal display panel 10 and a driving unit 20.
Wherein the driving unit 20 includes: a power module 200, a gate driver 210, a timing controller 220, and a data driver 230.
As shown in fig. 1, the lcd panel 10 includes a display area 31 and a peripheral area 32, and fig. 1 illustrates the display area 31 surrounded by the peripheral area 32. The display area 31 is used for displaying an image, and the peripheral area 32 is used for wiring.
As shown in fig. 1, in the display region 10, a plurality of gate lines 11 extending in a first direction (for example, a row direction), a plurality of data lines 12 extending in a second direction (for example, a column direction), and sub-pixels 13 defined by the gate lines 11 and the data lines 12 and arranged in an array are distributed on the liquid crystal display panel 10, and the sub-pixels 13 include Thin Film Transistors (TFTs), storage capacitors, liquid crystal capacitors, and the like. The liquid crystal display panel 10 further has a plurality of common electrode lines 14 parallel to the gate lines 11, and the common electrode lines 14 are in one-to-one correspondence with the gate lines 11.
The timing controller 220 is connected to both the gate driver 210 and the data driver 230, the gate driver 210 is connected to the plurality of gate lines 11, the data driver 230 is connected to the plurality of data lines 12, and the power module 200 is connected to the common electrode lines 14.
It should be understood that, in operation, the timing controller 220 is used to provide control signals to the gate driver 210 and the data driver 230, control the gate driver 210 to provide a scan voltage to the sub-pixel 13 through the gate line 11, and control the data driver 230 to provide a data voltage to the sub-pixel 13 through the data line 12. The power supply module 200 supplies the common voltage Vcom to the sub-pixels 13 through the common electrode lines 14.
Fig. 2 is a schematic structural diagram of one sub-pixel 13 in fig. 1, and fig. 3 is a waveform diagram corresponding to fig. 2. As shown in fig. 2 and 3, in each sub-pixel 13, the gate electrode of the thin film transistor is connected to the gate line 11, and the gate line 11 has an input scan voltage; the source electrode of the thin film transistor is connected with a data line 12, and the data line 12 has an input data voltage Vdata; first poles of the storage capacitor and the liquid crystal capacitor are connected with a drain electrode of the thin film transistor, and second poles of the storage capacitor and the liquid crystal capacitor are connected with the common electrode line 14 and are connected with a common voltage Vcom.
Based on the structure, when a picture is displayed, the thin film transistor is turned on, the coupling capacitor (i.e. the liquid crystal capacitor and the storage capacitor) exists between the common electrode line 14 and the data line 12, and when the data voltage Vdata on the data line 12 changes suddenly, the voltage across the coupling capacitor changes suddenly.
For example, as shown in fig. 3, when the data voltage Vdata suddenly changes upward (e.g. from 0V to 3V), the common voltage Vcom on the common electrode line 14 fluctuates upward due to the capacitive coupling effect; when the data voltage Vdata suddenly changes downward (e.g., from 3V to 0V), the common voltage Vcom on the common electrode line 14 fluctuates downward due to the capacitive coupling effect.
Therefore, when the data voltage Vdata on the data line 12 changes abruptly, the common voltage Vcom on the common electrode line 14 is difficult to keep stable, and further, the voltage difference between the common electrode and the pixel electrode is abnormal, which causes the deviation between the deflection direction of the liquid crystal molecules and the preset direction, so that the display image has defects of flicker, green light emission, crosstalk and the like, and the display effect and the yield of products are reduced.
Based on this, as shown in fig. 4, when the data voltage Vdata on the data line 12 corresponding to the plurality of sub-pixels 13 connected to the same common electrode line 14 suddenly changes, the common voltage Vcom on the common electrode line 14 will be affected by the plurality of data voltages Vdata together, resulting in a drift.
For example, as shown in (b) of fig. 4, the data voltage Vdata1 corresponding to the 1 st sub-pixel 13 changes upward (e.g. from 3V to 5V), and the common voltage Vcom on the common electrode line 14 fluctuates upward (e.g. a waveform corresponding to Vcom1 shown in the region P); the data voltage Vdata2 corresponding to the 2 nd sub-pixel 13 changes downward (e.g. from 3V to 2V), and the common voltage Vcom on the common electrode line 14 fluctuates downward (e.g. the waveform corresponding to Vcom2 shown in the region P), but since the common electrode line 14 is affected by two fluctuations at the same time and the influence of the fluctuation is large, the common voltage Vcom on the common electrode line 14 and after the two fluctuations are affected, an upward drift occurs, that is, the common voltage Vcom rises. On the basis, if the common voltage Vcom on the common electrode line 14 is affected by a plurality of fluctuations corresponding to the sub-pixels 13 in the same row, a large drift will be generated, and thus, the common voltage Vcom needs to be compensated.
In view of this, an embodiment of the present application provides a common voltage compensation method, which determines whether the number of positive and negative sub-pixels needs to be determined by determining a driving manner of a display screen and a type of the display screen, and when the number of the positive and negative sub-pixels needs to be determined and the determined number is different, determines a corresponding common voltage compensation value according to data voltages of the positive and negative sub-pixels and performs compensation, so that the compensated display screen can be normally displayed, and a purpose of solving problems such as crosstalk between pixels is achieved.
A common voltage compensation method provided in the embodiments of the present application is described below. The common voltage compensation method provided by the embodiment of the application is applied to a liquid crystal display device comprising a liquid crystal display panel, wherein the liquid crystal display panel comprises a display area, the display area is used for displaying a display picture, and the display area comprises a plurality of sub-pixels which are arranged in an array mode. Fig. 5 shows a flowchart of a method for compensating a common voltage according to an embodiment of the present application.
As shown in fig. 5, the compensation method for the common voltage provided by the embodiment of the present application includes the following steps S100 to S300, which are described in detail below.
And S100, when the driving mode of the display picture is dot inversion, column 2 dot inversion or row 2 dot inversion, determining whether the display picture is a first type display picture.
The first kind of display picture includes white display picture, black display picture and three primary colors display picture.
It is to be understood that in order to prevent the physical characteristics of the liquid crystal from being damaged, for example, the liquid crystal from being polarized when a fixed picture is displayed for a long time, an alternating current is generally used to drive the pixel electrode when displaying, that is, the data voltage Vdata supplied from the data line is an alternating voltage.
For example, taking VA liquid crystal as an example, assuming that the common voltage Vcom is 7V and the data voltage Vdata is 13.5V and 0.5V, since the voltage difference between 13.5V and 7V is equal to the voltage difference between 0.5V and 7V, when two sets of voltages are applied to both sides of the liquid crystal, the liquid crystal can deflect by the same angle, so that the liquid crystal display device 1 can achieve the same display brightness. Here, the data voltage Vdata larger than the common voltage Vcom is generally referred to as a positive polarity voltage, and the driving polarity corresponding to the sub-pixel 13 to which the positive polarity voltage is applied is referred to as a positive polarity; the data voltage Vdata smaller than the common voltage Vcom is referred to as a negative polarity voltage, and the driving polarity corresponding to the sub-pixel 13 to which the negative polarity voltage is applied is referred to as a negative polarity.
Based on this, during the display process, the polarities corresponding to the sub-pixels 13 are opposite between two consecutive frames of the display screen for the same pixel.
Although the liquid crystal polarization can be prevented by the alternating current driving, the flicker of the display screen is easily caused by the alternating current driving. The flicker problem is generally eliminated by using a spatial fusion method. The spatial fusion method is as follows: the adjacent sub-pixels 13 are kept at opposite drive polarities so that the optical response waveforms of the adjacent sub-pixels 13 are 180 ° out of phase. In this way, the waveforms of the adjacent sub-pixels 13 are spatially merged, and the human eye cannot distinguish the flicker component present in each sub-pixel 13.
There are many driving schemes that can achieve opposite polarity for adjacent sub-pixels 13, mainly dot inversion, column 2 dot inversion and row 2 dot inversion. Fig. 6 shows a polarity diagram of one of the sub-pixels 13.
It should be understood that, as shown in (a) of fig. 6, dot inversion means that each dot (sub-pixel) maintains opposite polarities to its adjacent four dots (sub-pixels) in the upper, lower, left, and right directions in the same frame display screen.
As shown in fig. 6 (b), the column 2 dot inversion means that the positive and negative polarities are inverted in units of 2 dots (two sub-pixels) on each column, and the positive and negative polarities are inverted in units of columns for two adjacent columns of sub-pixels on the same frame display screen.
As shown in (c) of fig. 6, the row 2 dot inversion means that the positive and negative polarities are inverted in units of 2 dots (two sub-pixels) in each row, and the positive and negative polarities are inverted in units of rows in two adjacent rows of sub-pixels in the same frame.
When the driving method of the display screen is the dot inversion, the column 2 dot inversion or the row 2 dot inversion, the data voltage Vdata corresponding to the sub-pixels 13 in the same row will have an upward or downward fluctuation effect on the common electrode, but at this time, there is a possibility that a plurality of fluctuations will be neutralized.
It should be understood that the full white display image is the image corresponding to the maximum difference between the data voltage Vdata and the common voltage Vcom, and the full black display image is the image corresponding to the difference between the data voltage Vdata and the common voltage Vcom (it can be considered that there is no positive or negative polarity at this time); the three-primary color display screen refers to a red display screen, a green display screen, and a blue display screen, and at this time, no matter which color of the three-primary color display screen is, only the data voltage Vdata different from the common voltage Vcom is applied to the sub-pixel 13 of the corresponding color.
Based on this, in any driving method, when the first type display screen is displayed, in each row of the sub-pixels 13, the number of the sub-pixels 13 corresponding to the positive polarity is substantially the same as the number of the sub-pixels 13 corresponding to the negative polarity, and the difference between the data voltage Vdata applied to the sub-pixels 13 corresponding to the positive and negative polarities and the common voltage Vcom is equal, so that the influence of the data voltage Vdata corresponding to the plurality of sub-pixels 13 on the common voltage Vcom can be considered to be neutralized. In this case, it is considered that the common voltage Vcom is not affected and the compensation is not necessary, but the influence on the common voltage Vcom is significant in the other display screens and the compensation is necessary.
S200, when the display picture does not belong to the first type of display picture, determining the number of first target sub-pixels and second target sub-pixels in each row of sub-pixels 13; the driving polarity corresponding to the first target sub-pixel is positive, and the driving polarity corresponding to the second target sub-pixel is negative.
It should be understood that, when the display screen does not belong to the first type of display screen, the plurality of data voltages Vdata corresponding to the same row of sub-pixels 13 have different effects on the common voltage Vcom, and if the number of two types of sub-pixels 13 with positive polarity and negative polarity is equal, although the applied voltages are different, the times of generating the rising fluctuation and the falling fluctuation are the same, and the resulting drift is relatively small and can be ignored.
And S300, aiming at each row of sub-pixels 13, when the number of the first target sub-pixels is not equal to that of the second target sub-pixels, determining and outputting corresponding common voltage compensation values according to the data voltages of the plurality of first target sub-pixels and the data voltages of the plurality of second target sub-pixels.
If the numbers of the two sub-pixels 13 with the driving polarities of positive and negative are not equal, that is, the number of the first target sub-pixels is greater than the number of the second target sub-pixels, the common voltage Vcom will drift upward, and the number of the first target sub-pixels is less than the number of the second target sub-pixels, the common voltage Vcom will drift downward, so that the common voltage Vcom needs to be compensated.
It should be understood that a corresponding common voltage compensation value may be determined according to the data voltages of the plurality of first target sub-pixels and the data voltages of the plurality of second target sub-pixels in each row of sub-pixels 13. That is, each row of sub-pixels 13 (each common electrode line 14) corresponds to one common voltage compensation value.
The embodiment of the application provides a common voltage compensation method, which judges whether the number of positive and negative sub-pixels needs to be determined or not by determining the driving mode of a display picture and the type of the display picture, and determines a corresponding common voltage compensation value and compensates the common voltage compensation value according to the data voltage of the positive and negative sub-pixels when the number of the positive and negative sub-pixels needs to be determined and the determined number is different, so that the compensated display picture can be normally displayed, and the purpose of solving the problems of crosstalk and the like among pixels is achieved.
Optionally, as a possible implementation manner, the compensation method further includes: determining a driving mode of a display picture; the driving method includes dot inversion, column 2 dot inversion, and row 2 dot inversion.
It should be understood that the driving manner of the display screen is determined, that is, whether the driving polarities of the two adjacent rows of sub-pixels 13 and the two adjacent columns of sub-pixels 13 in the display screen are opposite or not is determined. If the driving polarities of the sub-pixels 13 in two adjacent rows and two adjacent columns are opposite, a dot inversion driving mode is adopted; if the driving polarities of the sub-pixels 13 in two adjacent rows are opposite, but the polarities of the sub-pixels 13 in two columns are opposite, row 2 dot inversion is performed; if the driving polarities of the sub-pixels 13 in two adjacent columns are opposite, but the unit polarities of the sub-pixels 13 in two rows are opposite, the dot inversion is performed in column 2.
Optionally, as a possible implementation manner, after determining that the display screen does not belong to the first type of display screen, before determining the number of the first target sub-pixels and the second target sub-pixels in each row of sub-pixels 13, the compensation method further includes:
for each row of sub-pixels 13, the gray scale corresponding to each sub-pixel 13 is determined.
And determining the sub-pixel 13 with the gray scale meeting the preset gray scale range as a target sub-pixel, wherein the target sub-pixel comprises a first target sub-pixel and a second target sub-pixel.
It should be understood that if the input image display data is binary 8 bits, 8-th power gray scales from the darkest to the brightest gray scales of 2, i.e. 256 different gray scales (for example, referred to as 0 th gray scale to 255 th gray scale) are generated. In the liquid crystal display device 1, the brightness is determined by the voltage difference applied to both sides of the liquid crystal. The voltage at one side of the liquid crystal is fixed, namely, the voltage is a common voltage Vcom, the voltage at the other side is a data voltage, and 256 levels of data voltages Vdata are corresponding to 256 levels of different gray scales.
It should be understood that, taking VA liquid crystal as an example, in the 256-level data voltage Vdata, the voltage difference between the data voltage Vdata and the common voltage Vcom is larger, and the display is brighter. Thus, it is assumed that the difference between the data voltage Vdata corresponding to the 0 th gray scale and the common voltage Vcom is the smallest, and therefore, the brightness corresponds to the darkest; the difference between the data voltage Vdata corresponding to the 255 th gray scale and the common voltage Vcom is the largest, and therefore, the luminance corresponds to the brightest. Since the data voltage Vdata for driving the sub-pixel 13 is divided into positive and negative voltages, each gray scale corresponds to two data voltages Vdata of positive and negative polarities. For example, the common voltage is 6V, the positive polarity data voltage corresponding to the 255 th gray scale is 11V, and the negative polarity data voltage is 1V.
It will be appreciated that the magnitude of the data voltage Vdata is not linear, but rather non-linear with the setting of the gray scale level, since the human eye is less perceptible to excessively bright changes in brightness and more sensitive to darker changes in brightness. Then, when the data voltages Vdata corresponding to the plurality of sub-pixels 13 are converted, the sub-pixels 13 having a lower gray scale number are more affected, and the sub-pixels 13 having a higher gray scale number are less affected, so that the sub-pixels 13 having a lower gray scale are more focused when compensating the common voltage Vcom.
It should be understood that the preset gray scale range can be set and modified as required, and the embodiment of the present application does not limit this, for example, the preset gray scale range can be set to [30,200 ]. That is, after determining that the display frame does not belong to the first type of display frame, for each row of sub-pixels 13, it is determined whether the gray scale corresponding to each sub-pixel 13 belongs to the preset gray scale range, when the gray scale belongs to the 30 th gray scale to the 200 th gray scale, the sub-pixel 13 is taken as the target sub-pixel, if the corresponding driving polarity is positive polarity, the corresponding driving polarity is the first target sub-pixel, and if the corresponding driving polarity is negative polarity, the corresponding driving polarity is the second target sub-pixel.
Optionally, as a possible implementation manner, fig. 7 shows a schematic flow chart of another common voltage compensation method provided in an embodiment of the present application, and as shown in fig. 7, the S300 includes:
s310, for each row of sub-pixels 13, determining an average value of the data voltages of the plurality of first target sub-pixels as a first voltage.
And S320, determining the average value of the data voltages of the plurality of second target sub-pixels as a second voltage.
It should be understood that the data voltage of the first target sub-pixel will affect the common voltage Vcom to fluctuate upward, the average value of the data voltage of the first target sub-pixel is the voltage value that the common voltage Vcom may reach after drifting upward, i.e. the first voltage, while the data voltage of the second target sub-pixel will affect the common voltage Vcom to fluctuate downward, and the average value of the data voltage of the second target sub-pixel is the voltage value that the common voltage Vcom may reach after drifting downward, i.e. the second voltage.
S330, determining a voltage difference value of the first voltage and the second voltage.
And S340, determining and outputting a corresponding common voltage Vcom compensation value according to the voltage difference value.
It should be understood that the voltage difference between the first voltage and the second voltage is determined to be the influence of the fluctuation of the common voltage Vcom after the neutralization, so that the corresponding common voltage compensation value can be determined according to the voltage difference. By compensating the common voltage Vcom, the picture quality performance of the picture can be improved, and the product competitiveness can be improved.
Fig. 8 shows a schematic structural diagram of a liquid crystal display device 1 according to an embodiment of the present application. As shown in fig. 8, the liquid crystal display device 1 includes: a liquid crystal display panel 10, a timing controller 220, and a compensation unit 240.
The compensation unit 240 is connected to both the timing controller 220 and the liquid crystal display panel 10.
Wherein the timing controller 220 and the compensation unit 240 are connected through an ICC bus.
The lcd panel 10 includes a display area 31 and a peripheral area 32, the display area 31 is used for displaying a display screen, the peripheral area 32 is used for wiring, and as shown in fig. 8, the display area 31 includes a plurality of sub-pixels arranged in an array. As shown in fig. 8, assuming that the horizontal direction x is a row direction, the sub-pixels arranged along the horizontal direction x are a row of sub-pixels. The vertical direction y is a column direction, and the sub-pixels arranged along the vertical direction y are a column of sub-pixels. Of course, the row and column directions can be interchanged, and the embodiment of the present application does not set any limit on this.
When the driving manner of the display frame is dot inversion, column 2 dot inversion or row 2 dot inversion, the timing controller 220 is configured to determine whether the display frame belongs to a first type of display frame; the first kind of display picture includes white display picture, black display picture and three primary colors display picture.
When the driving method of the display screen is not dot inversion, column 2 dot inversion or row 2 dot inversion, compensation is not performed. When the display screen belongs to the first type of display screen, compensation of the common voltage Vcom is not performed.
When the display frame does not belong to the first type of display frame, the timing controller 220 is configured to determine the number of the first target sub-pixels and the second target sub-pixels in each row of sub-pixels 13; the driving polarity corresponding to the first target sub-pixel is positive, and the driving polarity corresponding to the second target sub-pixel is negative.
When the number of the first target sub-pixels and the second target sub-pixels is equal for each row of the sub-pixels 13, the influence on the common voltage Vcom may be considered to be almost equal, and thus, compensation may not be performed.
For each row of sub-pixels, when the numbers of the first target sub-pixels and the second target sub-pixels are not equal, the timing controller 220 is configured to determine a corresponding common voltage compensation value according to the data voltages of the plurality of first target sub-pixels and the data voltages of the plurality of second target sub-pixels, and output the common voltage compensation value to the compensation unit 240.
The compensation unit 240 is configured to compensate the common voltage of the liquid crystal display panel 10 according to the common voltage compensation value.
As shown in fig. 8, the liquid crystal display device 1 further includes a power module 200, a gate driver 210, and a data driver 230 as shown in fig. 1. The connection relationship between the power module 200, the gate driver 210, the data driver 230 and the liquid crystal display panel 10 is as described above, and is not described herein.
It should be understood that, after the timing controller 220 determines the common voltage compensation value, the common voltage compensation value may be updated to the compensation unit 240 through the ICC bus, and the compensation unit 240 provides the voltage to the corresponding common electrode line 14 on the liquid crystal display panel 10 according to the common voltage compensation value for compensation.
It should be understood that, here, the compensation unit 240 and the power supply module 200 are integrated on one chip, and the compensation unit 240 directly outputs the compensated common voltage.
The embodiment of the application provides a liquid crystal display device, whether the number of positive and negative sub-pixels needs to be determined or not is judged by determining the driving mode of a display picture and the type of the display picture, and when the number of the positive and negative sub-pixels needs to be determined and the determined number is different, a corresponding common voltage compensation value is determined through the data voltages of the positive and negative sub-pixels and compensation is carried out, so that the compensated display picture can be normally displayed, and the purposes of solving the problems of crosstalk and the like among pixels are achieved.
Alternatively, as a possible implementation manner, the timing controller 220 is used to determine a driving manner of the display screen; the driving method includes dot inversion, column 2 dot inversion, and row 2 dot inversion.
It will be appreciated that in addition to this, there are usually row and column inversions, which the present application does not compensate for.
Optionally, as a possible implementation manner, for each row of sub-pixels, the timing controller 220 is configured to determine a gray scale corresponding to each sub-pixel 13; and is further configured to determine the sub-pixel 13 with the gray scale satisfying the preset gray scale range as a target sub-pixel, where the target sub-pixel includes a first target sub-pixel and a second target sub-pixel.
The preset gray scale range can be set and modified according to the requirement, and the embodiment of the application does not limit the preset gray scale range at all.
Optionally, as a possible implementation manner, the timing controller 220 is configured to determine and output the corresponding common voltage compensation value to the compensation unit 240 according to the data voltage respectively corresponding to the first target sub-pixel and the data voltage respectively corresponding to the second target sub-pixel, and includes:
the timing controller 220 is configured to determine an average value of the data voltages of the plurality of first target subpixels as a first voltage; the timing controller 220 is configured to determine an average value of the data voltages of the plurality of second target subpixels as a second voltage; the timing controller 220 is further configured to determine a voltage difference between the first voltage and the second voltage; and is used for determining a corresponding common voltage compensation value according to the voltage difference value and outputting the common voltage compensation value to the compensation unit 240.
The embodiment of the application also provides a common voltage compensation device which is used for executing the common voltage compensation method.
The beneficial effects of the common voltage compensation device provided by the embodiment of the application are the same as the corresponding beneficial effects of the common voltage compensation method, and are not repeated herein.
Embodiments of the present application also provide a computer-readable storage medium, in which a computer program or an instruction is stored, and when the computer program or the instruction is read and executed by a computer, the computer is enabled to execute the common voltage compensation method.
The beneficial effects of the computer-readable storage medium provided by the embodiment of the application are the same as the beneficial effects corresponding to the common voltage compensation method, and are not described herein again.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not cause the essential features of the corresponding technical solutions to depart from the spirit scope of the technical solutions of the embodiments of the present application, and are intended to be included within the scope of the present application.
Claims (10)
1. A common voltage compensation method is applied to a liquid crystal display device comprising a liquid crystal display panel, wherein the liquid crystal display panel comprises a display area, the display area is used for displaying a display picture, and the display area comprises a plurality of sub-pixels arranged in an array, and the compensation method comprises the following steps:
when the driving mode of the display picture is dot inversion, column 2 dot inversion or row 2 dot inversion, determining whether the display picture belongs to a first type of display picture; the first type of display picture comprises a full white display picture, a full black display picture and a three-primary-color display picture;
when the display picture does not belong to the first type of display picture, determining the number of first target sub-pixels and second target sub-pixels in each row of sub-pixels; the driving polarity corresponding to the first target sub-pixel is positive, and the driving polarity corresponding to the second target sub-pixel is negative;
and for each row of sub-pixels, when the number of the first target sub-pixels is not equal to that of the second target sub-pixels, determining and outputting a corresponding common voltage compensation value according to the data voltages of the plurality of first target sub-pixels and the data voltages of the plurality of second target sub-pixels.
2. The compensation method according to claim 1, wherein after determining that the display screen does not belong to the first category of display screens, before determining the number of first target sub-pixels and second target sub-pixels in each row of sub-pixels, the compensation method further comprises:
determining a gray scale corresponding to each sub-pixel aiming at each row of sub-pixels;
and determining the sub-pixel with the gray scale meeting a preset gray scale range as a target sub-pixel, wherein the target sub-pixel comprises the first target sub-pixel and the second target sub-pixel.
3. The compensation method according to claim 1 or 2, wherein determining and outputting the corresponding common voltage compensation value according to the data voltage respectively corresponding to the first target sub-pixel and the data voltage respectively corresponding to the second target sub-pixel comprises:
determining an average value of data voltages of a plurality of the first target sub-pixels as a first voltage for each row of sub-pixels;
determining an average value of data voltages of the plurality of second target subpixels as a second voltage;
determining a voltage difference between the first voltage and the second voltage;
and determining and outputting the corresponding common voltage compensation value according to the voltage difference value.
4. The compensation method of claim 3, further comprising:
determining a driving mode of the display picture;
wherein the driving manner includes the dot inversion, the column 2 dot inversion, and the row 2 dot inversion.
5. A liquid crystal display device, comprising: the liquid crystal display device comprises a liquid crystal display panel, a time sequence controller and a compensation unit; the compensation unit is connected with the time sequence controller and the liquid crystal display panel; the liquid crystal display panel comprises a display area, the display area is used for displaying a display picture and comprises a plurality of sub-pixels arranged in an array;
when the driving mode of the display picture is dot inversion, column 2 dot inversion or row 2 dot inversion, the time sequence controller is used for determining whether the display picture belongs to a first type of display picture; the first type of display picture comprises a full white display picture, a full black display picture and a three-primary-color display picture;
when the display picture does not belong to the first type of display picture, the time sequence controller is used for determining the number of first target sub-pixels and second target sub-pixels in each row of sub-pixels; the driving polarity corresponding to the first target sub-pixel is positive, and the driving polarity corresponding to the second target sub-pixel is negative;
for each row of sub-pixels, when the number of the first target sub-pixels and the number of the second target sub-pixels are not equal, the timing controller is configured to determine a corresponding common voltage compensation value according to the data voltages of the plurality of first target sub-pixels and the data voltages of the plurality of second target sub-pixels, and output the common voltage compensation value to the compensation unit;
the compensation unit is used for compensating the common voltage of the liquid crystal display panel according to the common voltage compensation value.
6. The liquid crystal display device according to claim 5, wherein the timing controller is configured to determine, for each row of sub-pixels, a gray scale corresponding to each sub-pixel; and the target sub-pixel is used for determining the sub-pixel with the gray scale meeting a preset gray scale range as a target sub-pixel, and the target sub-pixel comprises the first target sub-pixel and the second target sub-pixel.
7. The lcd apparatus of claim 5 or 6, wherein the timing controller is configured to determine and output a corresponding common voltage compensation value to the compensation unit according to the data voltages respectively corresponding to the first target sub-pixels and the data voltages respectively corresponding to the second target sub-pixels, and comprises:
the time sequence controller is used for determining the average value of the data voltages of the first target sub-pixels as a first voltage;
the time sequence controller is used for determining the average value of the data voltages of the second target sub-pixels as a second voltage;
the timing controller is further configured to determine a voltage difference between the first voltage and the second voltage; and the compensation unit is used for determining the corresponding common voltage compensation value according to the voltage difference value and outputting the common voltage compensation value to the compensation unit.
8. The liquid crystal display device according to claim 7, wherein the timing controller is configured to determine a driving manner of the display screen; wherein the driving manner includes the dot inversion, the column 2 dot inversion, and the row 2 dot inversion.
9. A common voltage compensation apparatus for performing the common voltage compensation method according to any one of claims 1 to 4.
10. A computer-readable storage medium having stored therein a computer program or instructions, which when read and executed by a computer, causes the computer to execute the common voltage compensation method according to any one of claims 1 to 4.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113808515A (en) * | 2021-09-23 | 2021-12-17 | 惠科股份有限公司 | Common electrode structure, driving method and display device |
| CN114120933A (en) * | 2021-12-06 | 2022-03-01 | 京东方科技集团股份有限公司 | Display panel driving method and display device |
| CN114530114A (en) * | 2022-04-24 | 2022-05-24 | 惠科股份有限公司 | Display screen, public voltage adjusting method and computer readable storage medium |
| CN114942536A (en) * | 2022-07-26 | 2022-08-26 | 惠科股份有限公司 | Liquid crystal display module and electronic device |
| CN115512667A (en) * | 2022-10-18 | 2022-12-23 | 重庆惠科金渝光电科技有限公司 | Driving method of electronic paper device and electronic paper device |
| CN116343701A (en) * | 2023-03-15 | 2023-06-27 | 惠科股份有限公司 | Display panel, driving method thereof and computer storage medium |
| CN117334156A (en) * | 2022-06-29 | 2024-01-02 | 格兰菲智能科技有限公司 | Pixel compensation method, device, computer equipment and storage medium |
| WO2024164430A1 (en) * | 2023-02-09 | 2024-08-15 | Tcl华星光电技术有限公司 | Display apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200809722A (en) * | 2006-08-03 | 2008-02-16 | Chunghwa Picture Tubes Ltd | Common voltage compensation device, liquid crystal display and driving method thereof |
| CN101127195A (en) * | 2006-08-15 | 2008-02-20 | 中华映管股份有限公司 | Common voltage compensation device, liquid crystal display and its driving method |
| US20080278429A1 (en) * | 2007-05-09 | 2008-11-13 | Innolux Display Corp. | Liquid crystal display device having controlling circuit for adjusting common voltage |
| CN102903344A (en) * | 2012-09-27 | 2013-01-30 | 合肥京东方光电科技有限公司 | Public electrode voltage compensation method and device and time schedule controller |
| CN111145701A (en) * | 2020-01-02 | 2020-05-12 | 京东方科技集团股份有限公司 | Voltage adjusting method and device of display panel and display panel |
-
2021
- 2021-05-26 CN CN202110576025.6A patent/CN113284470B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200809722A (en) * | 2006-08-03 | 2008-02-16 | Chunghwa Picture Tubes Ltd | Common voltage compensation device, liquid crystal display and driving method thereof |
| CN101127195A (en) * | 2006-08-15 | 2008-02-20 | 中华映管股份有限公司 | Common voltage compensation device, liquid crystal display and its driving method |
| US20080278429A1 (en) * | 2007-05-09 | 2008-11-13 | Innolux Display Corp. | Liquid crystal display device having controlling circuit for adjusting common voltage |
| CN102903344A (en) * | 2012-09-27 | 2013-01-30 | 合肥京东方光电科技有限公司 | Public electrode voltage compensation method and device and time schedule controller |
| CN111145701A (en) * | 2020-01-02 | 2020-05-12 | 京东方科技集团股份有限公司 | Voltage adjusting method and device of display panel and display panel |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113808515A (en) * | 2021-09-23 | 2021-12-17 | 惠科股份有限公司 | Common electrode structure, driving method and display device |
| US11645962B2 (en) | 2021-09-23 | 2023-05-09 | HKC Corporation Limited | Common electrode pattern, driving method, and display equipment |
| CN114120933A (en) * | 2021-12-06 | 2022-03-01 | 京东方科技集团股份有限公司 | Display panel driving method and display device |
| CN114530114A (en) * | 2022-04-24 | 2022-05-24 | 惠科股份有限公司 | Display screen, public voltage adjusting method and computer readable storage medium |
| CN117334156A (en) * | 2022-06-29 | 2024-01-02 | 格兰菲智能科技有限公司 | Pixel compensation method, device, computer equipment and storage medium |
| CN114942536A (en) * | 2022-07-26 | 2022-08-26 | 惠科股份有限公司 | Liquid crystal display module and electronic device |
| CN114942536B (en) * | 2022-07-26 | 2022-10-28 | 惠科股份有限公司 | Liquid crystal display module and electronic device |
| CN115512667A (en) * | 2022-10-18 | 2022-12-23 | 重庆惠科金渝光电科技有限公司 | Driving method of electronic paper device and electronic paper device |
| CN115512667B (en) * | 2022-10-18 | 2024-01-12 | 重庆惠科金渝光电科技有限公司 | Driving method of electronic paper equipment and electronic paper equipment |
| WO2024164430A1 (en) * | 2023-02-09 | 2024-08-15 | Tcl华星光电技术有限公司 | Display apparatus |
| CN116343701A (en) * | 2023-03-15 | 2023-06-27 | 惠科股份有限公司 | Display panel, driving method thereof and computer storage medium |
| CN116343701B (en) * | 2023-03-15 | 2024-08-09 | 惠科股份有限公司 | Display panel, driving method thereof and computer storage medium |
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