CN113936617A - Display device control method, display device, and computer storage medium - Google Patents
Display device control method, display device, and computer storage medium Download PDFInfo
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- 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
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Abstract
The application discloses a control method of a display device, the display device and a computer storage medium, and belongs to the technical field of display. The method comprises the following steps: determining a compensation gray-scale value based on the gray-scale value of the target column sub-pixels in the target frame; after charging of each sub-pixel in the target frame is completed, loading a voltage corresponding to a compensation gray-scale value to a data line corresponding to the sub-pixel in the target column; and before the next frame of the target frame is started, the voltage loaded on the data line corresponding to the target column sub-pixel is cancelled. According to the method, the compensation gray-scale value is determined based on the gray-scale value of the target column sub-pixel in the target frame, and after all sub-pixels in the frame are charged, the voltage corresponding to the compensation gray-scale value is loaded to the data line corresponding to the target column sub-pixel, so that the voltage difference between the source electrode and the drain electrode of the thin film transistor in each sub-pixel can be reduced, further the loss of charges in the sub-pixels is reduced, and the problem that the display effect of the display panel in the related technology is poor is solved. The display effect of the display panel is improved.
Description
Technical Field
The present disclosure relates to the field of display, and more particularly, to a method for controlling a display device, and a computer storage medium.
Background
A display device is a device having an image display function. Currently, a display device includes a display panel and a control component, and the control component controls the display panel to display a frame of continuous pictures.
In a control method of a display device, in one frame, each sub-pixel is charged (a capacitor in the sub-pixel is charged), then a vertical Blanking (V-Blanking) period is entered, until the starting time of the next frame, the vertical Blanking period is ended, and each sub-pixel is charged again. Thus, a frame-by-frame continuous picture can be displayed.
However, in the above method, the charges in the sub-pixels are gradually lost in the vertical blanking period, which causes the brightness of the image displayed by the display device to gradually change, and further causes the display effect of the display panel to be poor.
Disclosure of Invention
The embodiment of the application provides a control method of a display device, the display device and a computer storage medium. The technical scheme is as follows:
according to a first aspect of the present application, there is provided a control method of a display apparatus, the method including:
determining a compensation gray-scale value based on the gray-scale value of the target column sub-pixels in the target frame;
after charging of each sub-pixel in the target frame is completed, loading a voltage corresponding to the compensation gray scale value to a data line corresponding to the sub-pixel in the target row;
and before the next frame of the target frame starts, canceling the voltage loaded on the data line corresponding to the target column sub-pixel.
Optionally, the determining a compensated gray-scale value based on the gray-scale values of the target column of subpixels in the target frame includes:
determining a weight of a sub-pixel in the target row of sub-pixels, wherein the gray scale value of the sub-pixel in the target row of sub-pixels is negatively related to the weight;
and determining the weighted average of the gray-scale values of the sub-pixels of the target column in the target frame as the compensation gray-scale value.
Optionally, the determining the weight of the sub-pixels in the target column of sub-pixels includes:
when the gray-scale value of a first sub-pixel in the target row of sub-pixels is larger than a specified value, determining the weight of the first sub-pixel as a first target value;
and when the gray-scale value of the first sub-pixel is smaller than or equal to the designated value, determining that the weight value of the first sub-pixel is a second target value, wherein the second target value is larger than the first target value and is negatively related to the gray-scale value of the first sub-pixel.
Optionally, the determining that the weight of the first subpixel is the second target value includes:
determining the weight of the first sub-pixel as a second target value according to a first formula, wherein the first formula comprises:
k＝c*b/a；
wherein k is the second target value, c is a preset parameter, b is the specified value, and a is the gray level value of the first subpixel.
Optionally, the specified value is a gray-scale value corresponding to a target brightness, and when the brightness of the display device is lower than the target brightness, the flicker degree of the display device is greater than a target flicker degree.
Optionally, the preset parameter ranges from 2 to 10.
Optionally, the determining a weighted average of the gray-scale values of the target column sub-pixels in the target frame as the compensated gray-scale value includes:
determining the compensated gray scale value by a second formula, the second formula comprising:
A＝[k1*a1*n1+k2*a2*n2……+km*am*nm]/[k1*n1+k2*n2+k3*n3……+km*nm]；
wherein A is the compensation gray scale value, axA gray level value, n, of one sub-pixel for said target columnxFor the gray level value in the target row as the axNumber of sub-pixels, kxThe gray scale value is axX is 1, 2, 3. m-1, m.
Optionally, the determining a weighted average of the gray-scale values of the target column sub-pixels in the target frame as the compensated gray-scale value includes:
determining the compensated gray scale value by a third formula, the third formula comprising:
A＝{[(k1*a1)^2*n1+(k2*a2)^2*n2+……+(km*am)^2*nm]^1/2}/{[(k1*n1)^2+(k2*n2)^2+……+(km*nm)^2]^1/2}；
wherein A is the compensation gray scale value, axA gray level value, n, of one sub-pixel for said target columnxFor the gray level value in the target row as the axNumber of sub-pixels, kxThe gray scale value is axX is 1, 2, 3. m-1, m.
Optionally, after the charging of each sub-pixel in the target frame is completed, the loading the voltage corresponding to the compensation gray scale value to the data line corresponding to the sub-pixel in the target column includes:
and after the charging of each sub-pixel in the target frame is finished, loading a voltage corresponding to the compensation gray-scale value to a data line corresponding to the target column sub-pixel through a screen driving board.
Optionally, before determining the compensated gray-scale value based on the gray-scale value of the target column of the sub-pixels in the target frame, the method further includes:
when a frame rate reduction instruction is acquired, adjusting a vertical blanking period from a first time length to a second time length, wherein the second time length is greater than the first time length, and the vertical blanking period is a period from the time when each sub-pixel in the target frame is completely charged to the time when the next frame of the target frame starts.
In another aspect, there is provided a display device including:
the determining module is used for determining a compensation gray-scale value based on the gray-scale value of the target column sub-pixels in the target frame;
the pressurizing module is used for loading the voltage corresponding to the compensation gray-scale value to the data line corresponding to the target column sub-pixel after the charging of each sub-pixel in the target frame is finished;
and the cancelling module is used for cancelling the voltage loaded on the data line corresponding to the target column sub-pixel before the next frame of the target frame starts.
In another aspect, the present application provides a display apparatus, which includes a processor and a memory, where at least one instruction, at least one program, a code set, or a set of instructions is stored in the memory, and the at least one instruction, the at least one program, the code set, or the set of instructions is loaded and executed by the processor to implement the control method of the display apparatus as described above.
In another aspect, the present application provides a computer storage medium having at least one instruction, at least one program, a set of codes, or a set of instructions stored therein, loaded and executed by a processor to implement the control method of the display apparatus as described above.
In another aspect, the present application provides a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the method provided in the various alternative implementations described above.
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
the compensation gray-scale value is determined based on the gray-scale value of the target column sub-pixel in the target frame, the voltage corresponding to the compensation gray-scale value is loaded to the data line corresponding to the target column sub-pixel after the charging of each sub-pixel in the frame is completed, and then the voltage loaded on the data line corresponding to the target column sub-pixel is cancelled before the next frame of the target frame starts, so that the voltage difference between the source electrode and the drain electrode of the thin film transistor in each sub-pixel can be reduced, the loss of charges in the sub-pixels is reduced, and the problem of poor display effect of the display panel in the related technology is solved. The display effect of the display panel is improved.
In addition, because the loss of the electric charge in the sub-pixels can be reduced in each frame, and further the brightness change of each frame of picture is reduced, the effect of reducing the screen flicker can be realized. The display effect of the display panel is further improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a sub-pixel structure according to the present application;
fig. 2 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;
fig. 3 is a flowchart illustrating a control method of a display device according to an embodiment of the present application;
fig. 4 is a flowchart illustrating another control method of a display device according to an embodiment of the present application;
FIG. 5 is a graph of the variation of brightness of a display panel during displaying;
fig. 6 is a luminance change curve of a display panel to which a control method of a display device according to an embodiment of the present application is applied;
fig. 7 is a block diagram of a display device according to an embodiment of the present application.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
A display device generally includes a display panel and a control assembly. The display panel comprises a plurality of sub-pixels arranged in rows and columns, and one sub-pixel is used for emitting corresponding color light. For example, a blue subpixel is used to emit blue light, a red subpixel is used to emit red light, and a green subpixel is used to emit green light.
For example, the embodiment of the present application can be applied to a display device including a liquid crystal display panel, wherein a structure in a sub-pixel may be as shown in fig. 1, the sub-pixel 10 includes a Thin Film Transistor (TFT) 11, a pixel capacitor 12, a data line 13, and a gate line 14, the Thin Film Transistor (TFT) 11 includes a first electrode 111, a second electrode (the first electrode and the second electrode may be a source and a drain) 112, and a gate g, the first electrode 111 is connected to the pixel capacitor 12, the second electrode 12 is connected to the data line 13, the gate 113 is connected to the gate line 14, and the pixel capacitor 12 is further connected to a reference voltage terminal Vcom. Wherein, the pixel capacitor 12 may comprise a liquid crystal equivalent capacitor ClcLiquid crystal equivalent resistance RlcAnd a storage capacitor Cs。
When the sub-pixel is charged in a certain frame, the first pole and the second pole of the thin film transistor are controlled to be switched on through the grid electrode, the data line charges the pixel capacitor, and after the charging is finished, the first pole and the second pole of the thin film transistor are controlled to be switched off through the grid electrode, so that the charge loss in the pixel capacitor is avoided. Thus, the pixel capacitor can continuously apply voltage to the corresponding structure in the vertical blanking period before the next frame starts, so as to realize the display function.
However, when the first and second electrodes of the tft are turned off, a small amount of charge may still flow out from the pixel capacitor through the tft, resulting in a weak current, which is referred to as a leakage current. The voltage on the pixel capacitor is gradually attenuated in the vertical blanking period due to the leakage current, and the brightness of the light emitted from the sub-pixel region is changed, such as becoming bright or dark (the brightness is determined according to whether the liquid crystal display panel is a normally dark type or a normally bright type). If the brightness of the sub-pixel area gradually becomes brighter or darker in each frame, a phenomenon of continuous Flicker of the picture, which may be referred to as a screen Flicker (Panel Flicker) phenomenon, may occur, which may result in poor display effect and user experience.
The embodiment of the application provides a control method of a display device, the display device and a computer storage medium
Fig. 2 is a schematic structural diagram of a display device according to an embodiment of the present application. The display device 30 may include a control assembly 31 and a display panel 32. The control component 31 is connected to the display panel 32 for controlling the display of the display panel 32.
The control component 31 may include a screen driver board (TCON) that may send control signals to a driver integrated circuit (e.g., S-IC) on the display panel 32 to control the display driver circuit to charge the subpixels.
The display panel 32 may be a liquid crystal display panel.
Fig. 3 is a flowchart illustrating a control method of a display device according to an embodiment of the present application. The control method of the display device may include the steps of:
And step 303, before the next frame of the target frame starts, canceling the voltage loaded on the data line corresponding to the target column sub-pixel.
The target frame may be one frame of a continuous frame-by-frame screen displayed by the display device, and may be any frame, or a certain frame specified in advance, for example, which is not limited in this embodiment of the application. Similarly, the target column of sub-pixels may refer to any column of sub-pixels, or may refer to a column of pre-specified sub-pixels, which is not limited in this embodiment of the present application.
In summary, according to the control method of the display device provided in the embodiment of the present application, the compensation gray scale value is determined based on the gray scale value of the target column sub-pixel in the target frame, and after the charging of each sub-pixel in the frame is completed, the voltage corresponding to the compensation gray scale value is loaded to the data line corresponding to the target column sub-pixel, and then the voltage loaded to the data line corresponding to the target column sub-pixel is cancelled before the next frame of the target frame starts, so that the voltage difference between the source and the drain of the thin film transistor in each sub-pixel can be reduced, the loss of the charge in the sub-pixel is further reduced, and the problem of poor display effect of the display panel in the related art is solved. The display effect of the display panel is improved.
In addition, because the loss of the electric charge in the sub-pixels can be reduced in each frame, and further the brightness change of each frame of picture is reduced, the effect of reducing the screen flicker can be realized. The display effect of the display panel is further improved.
Fig. 4 is a flowchart illustrating another control method for a display device according to an embodiment of the present application. The control method of the display device may include the steps of:
The frame rate reduction instruction may be used to instruct the display device to reduce a refresh rate that indicates a number of pictures displayed by the display device in one second. And the second time length is greater than the first time length, and the vertical blanking period is a period from the time when each sub-pixel in the target frame is completely charged to the time when the next frame of the target frame starts.
The control method of the display device provided by the embodiment of the application can be applied to the control component in the display device shown in fig. 2. The control component may increase the vertical blanking period from the first duration to the second duration upon acquiring the frame rate reduction instruction.
The display device may be a display device capable of achieving a relatively high refresh rate (e.g., capable of achieving a refresh rate greater than 60 hertz, such as 90 hertz, 120 hertz, 144 hertz, etc.). When the display device is to perform a display task requiring a high refresh rate (such as displaying a game screen), the display device can realize a display of a high refresh rate. However, if the display device is still displaying at a high refresh rate when other display tasks (such as playing a movie) do not require a high refresh rate, the power consumption of the display device may be excessive.
Therefore, when the display device acquires the frame rate reduction instruction, the refresh rate of the display device can be reduced by increasing the vertical blanking period without changing the pixel clock (pixelk).
The first duration and the second duration may be calculated based on parameters such as a current refresh rate of the display device, a pixel charging time, and a target refresh rate to which the display device is to be adjusted.
And step 402, determining the weight of the sub-pixels in the sub-pixels of the target column.
The control component may determine a weight for each subpixel in the target column of subpixels, the grayscale value of the subpixel being inversely related to the weight. That is, the larger the gray scale value is, the larger the weight value is. Of course, the increase of the gray scale value and the increase of the weight value may be equal to or not, and the embodiment of the present application does not limit this.
For example, one way to determine the weights of the sub-pixels in the target column of sub-pixels may include:
1) and when the gray-scale value of the first sub-pixel in the target column of sub-pixels is larger than the specified value, determining the weight of the first sub-pixel as a first target value.
That is, when the gray level of the first sub-pixel is larger, the weight of the first sub-pixel may be determined as a fixed first target value, and the first target value may be a predetermined fixed value, for example, 1.
When the brightness of the display device is greater than the target brightness, the flicker degree of the display device is less than the target flicker degree; when the brightness of the display device is less than or equal to the target brightness, the flicker degree of the display device is greater than the target flicker degree.
That is, when the brightness of the display device is greater than the target brightness, the flicker degree of the display panel is weak, and a smaller and fixed weight may be determined for the first sub-pixel.
The gray scale value corresponding to the target brightness is the brightness measured by the external device when the display device displays a certain gray scale value. The gray scale values corresponding to the target brightness may be different for different display devices. For example, in a display device, the target brightness may be 5 nits (nits), and the corresponding gray scale value may be 32.
Alternatively, the degree of flicker of the display device may be the degree of flicker defined by the jeita standard. The measurement may be performed by providing a plurality of probes in the display area of the display device, which is not limited in the present application.
2) When the gray-scale value of the first sub-pixel is smaller than or equal to the designated value, the weight of the first sub-pixel is determined to be a second target value, and the second target value is larger than the first target value and is negatively related to the gray-scale value of the first sub-pixel.
When the gray-scale value of the first sub-pixel is less than or equal to the designated value, the weight of the first sub-pixel may be set to a second target value that is greater than the first target value, and the second target value may also increase as the gray-scale value of the first sub-pixel increases.
The arrangement is that human eyes are sensitive to the flicker phenomenon of the display picture under low brightness and are insensitive to the flicker phenomenon of the display picture under high brightness. Therefore, the weight of the sub-pixel under high luminance can be set to a fixed and lower first target value, and the weight of the sub-pixel under low luminance can be set to a larger second target value which is increased along with the gray-scale value, so as to increase the weight of the sub-pixel under low luminance. So that the sub-pixels with low luminance are more preferably considered when subsequently determining the compensated gray scale value.
In an alternative embodiment, the weight of the first sub-pixel may be determined to be the second target value according to a first formula, where the first formula includes:
k＝c*b/a；
wherein k is the second target value, c is the predetermined parameter, b is the designated value, and a is the gray level of the first sub-pixel. The second target value can be adjusted by adjusting a preset parameter, and the larger the preset parameter is, the better the compensation effect for the low gray level is, but the leakage current of the high gray level becomes serious. Optionally, the preset parameter is in the range of 2-10.
The control component may determine a weighted average based on the weight value of each sub-pixel in the target column of sub-pixels determined in the above step and the gray scale value of each sub-pixel, and determine the weighted average as the compensated gray scale value.
Exemplary ways of determining the compensated gray scale value include at least the following two:
the first method comprises the following steps: determining a compensated gray scale value by a second formula, the second formula comprising:
A＝[k1*a1*n1+k2*a2*n2……+km*am*nm]/[k1*n1+k2*n2+k3*n3……+km*nm]；
wherein A is a compensation gray scale value, axFor a gray level of one sub-pixel of the target column, nxThe gray level value in the target row is axNumber of sub-pixels, kxA gray scale value of axX is 1, 2, 3. m-1, m.
Exemplary, axCan satisfy 0 < ax255, for example, if the gray level a1 of a sub-pixel in the target column is 60, then k1 is the weight of the sub-pixel, which may be 1, and n1 is the number of pixels in the target column with a gray level of 60, which may be 20.
In an exemplary embodiment, the target row of sub-pixels has 10 rows, and the display gray levels are: 8, 16, 32, 64, 96, 96, 64, 32, 16, 8, with the specified value of 32, c-2.
Then a ═ 8 × 2 × (2 × 32/8) +16 × 2 × (2 × 32/16) +32 × 2 × (2 × 32/32) +64 × 2+96 × 2]/[2 × 32/8+2 × (32/16 +2 × (32/32 + 2) × (22).
I.e. the compensation gray level is 22.
And the second method comprises the following steps: determining a compensated gray scale value by a third formula, the third formula comprising:
A＝{[(k1*a1)^2*n1+(k2*a2)^2*n2+……+(km*am)^2*nm]^1/2}/{[(k1*n1)^2+(k2*n2)^2+……+(km*nm)^2]^1/2}；
wherein A is a compensation gray scale value, axFor a gray level of one sub-pixel of the target column, nxThe gray level value in the target row is axNumber of sub-pixels, kxA gray scale value of axX is 1, 2, 3. m-1, m.
For the display panel, each gray-scale value may correspond to a voltage, and when the voltage of the storage capacitor in the sub-pixel is a certain voltage, the current gray-scale value of the sub-pixel is the gray-scale value corresponding to the voltage. The correspondence between the gray-scale value and the voltage may be stored in the display device in advance. Therefore, after the compensation gray-scale value is determined, the voltage corresponding to the compensation gray-scale value can be obtained.
And step 404, after the charging of each sub-pixel in the target frame is completed, loading a voltage corresponding to the compensation gray-scale value to the data line corresponding to the sub-pixel of the target column through the screen driving board.
After charging of each sub-pixel in the target frame is completed, the display device enters a vertical blanking period, and the control assembly can load a voltage corresponding to the compensation gray-scale value to the data line corresponding to the target column sub-pixel through the screen driving board. The voltage can be closer to the voltage of the pixel capacitor in each sub-pixel in the target column sub-pixel, so that the voltage difference between the first pole and the second pole of the thin film transistor in the sub-pixel is smaller, the leakage current of the thin film transistor in the closed state can be reduced, the loss of charges in the pixel capacitor is further reduced, and the change of the brightness of the sub-pixel in the vertical blanking period is reduced.
Optionally, after acquiring the compensated gray scale value corresponding to each column of sub-pixels, the control component may simultaneously apply a corresponding voltage to the data line corresponding to each column of sub-pixels during the vertical blanking period, so as to simultaneously reduce the variation of the brightness of the entire display panel during the vertical blanking period. Therefore, the effect of reducing the screen flicker phenomenon can be achieved, and the display effect and the user experience of the display device are improved.
The control component may cancel the voltage applied to the data line corresponding to the target column sub-pixel before the next frame of the target frame starts, so as to avoid affecting the normal display of the next frame.
In summary, according to the control method of the display device provided in the embodiment of the present application, the compensation gray scale value is determined based on the gray scale value of the target column sub-pixel in the target frame, and after the charging of each sub-pixel in the frame is completed, the voltage corresponding to the compensation gray scale value is loaded to the data line corresponding to the target column sub-pixel, and then the voltage loaded to the data line corresponding to the target column sub-pixel is cancelled before the next frame of the target frame starts, so that the voltage difference between the source and the drain of the thin film transistor in each sub-pixel can be reduced, the loss of the charge in the sub-pixel is further reduced, and the problem of poor display effect of the display panel in the related art is solved. The display effect of the display panel is improved.
In addition, because the loss of the electric charge in the sub-pixels can be reduced in each frame, and further the brightness change of each frame of picture is reduced, the effect of reducing the screen flicker can be realized. The display effect of the display panel is further improved.
Exemplarily, as shown in fig. 5, which is a luminance variation curve of the display panel when displaying, it can be seen that the luminance of the display panel is significantly attenuated in the vertical blanking period. Such fading repeatedly occurs in each frame, which may cause a screen flickering phenomenon, resulting in poor display effect and user experience of the display panel.
As shown in fig. 6, which is a luminance variation curve of a display panel to which the control method of the display device according to the embodiment of the present application is applied, it can be seen that the attenuation of the luminance of the display panel in the vertical blanking period is significantly improved compared to fig. 5.
Fig. 7 is a block diagram of a display device according to an embodiment of the present application, where the display device 700 includes:
a determining module 710, configured to determine a compensated gray scale value based on a gray scale value of a target column of subpixels in a target frame;
the pressurizing module 720 is configured to load a voltage corresponding to the compensation gray scale value to the data line corresponding to the target column subpixel after the charging of each subpixel in the target frame is completed;
and a cancellation module 730, configured to cancel the voltage applied to the data line corresponding to the target column subpixel before a next frame of the target frame starts.
In summary, according to the control method of the display device provided in the embodiment of the present application, the compensation gray scale value is determined based on the gray scale value of the target column sub-pixel in the target frame, and after the charging of each sub-pixel in the frame is completed, the voltage corresponding to the compensation gray scale value is loaded to the data line corresponding to the target column sub-pixel, and then the voltage loaded to the data line corresponding to the target column sub-pixel is cancelled before the next frame of the target frame starts, so that the voltage difference between the source and the drain of the thin film transistor in each sub-pixel can be reduced, the loss of the charge in the sub-pixel is further reduced, and the problem of poor display effect of the display panel in the related art is solved. The display effect of the display panel is improved.
In addition, because the loss of the electric charge in the sub-pixels can be reduced in each frame, and further the brightness change of each frame of picture is reduced, the effect of reducing the screen flicker can be realized. The display effect of the display panel is further improved.
Optionally, the determining module 710 includes:
the weight determining unit is used for determining the weight of the sub-pixels in the target row of sub-pixels, and the gray-scale value of one sub-pixel in the target row of sub-pixels is negatively related to the weight;
and the compensation determining unit is used for determining the weighted average value of the gray-scale values of the target column sub-pixels in the target frame as the compensation gray-scale value.
Optionally, the weight determining unit includes:
the first determining subunit is used for determining the weight of the first subpixel as a first target value when the gray-scale value of the first subpixel in the target column subpixel is greater than the specified value;
and the second determining subunit is used for determining the weight value of the first subpixel as a second target value when the gray-scale value of the first subpixel is less than or equal to the specified value, wherein the second target value is greater than the first target value and is negatively related to the gray-scale value of the first subpixel.
Optionally, the second determining subunit is configured to:
determining the weight of the first sub-pixel as a second target value according to a first formula, wherein the first formula comprises:
k＝c*b/a；
wherein k is the second target value, c is the predetermined parameter, b is the designated value, and a is the gray level of the first sub-pixel.
Optionally, the specified value is a gray-scale value corresponding to the target brightness, and when the brightness of the display device is lower than the target brightness, the flicker degree of the display device is greater than the target flicker degree.
Optionally, the preset parameter is in the range of 2-10.
Optionally, the compensation determining unit is configured to:
determining a compensated gray scale value by a second formula, the second formula comprising:
A＝[k1*a1*n1+k2*a2*n2……+km*am*nm]/[k1*n1+k2*n2+k3*n3……+km*nm]；
wherein A is a compensation gray scale value, axFor a gray level of one sub-pixel of the target column, nxThe gray level value in the target row is axNumber of sub-pixels, kxA gray scale value of axX is 1, 2, 3. m-1, m.
Optionally, the compensation determining unit is configured to:
determining a compensated gray scale value by a third formula, the third formula comprising:
A＝{[(k1*a1)^2*n1+(k2*a2)^2*n2+……+(km*am)^2*nm]^1/2}/{[(k1*n1)^2+(k2*n2)^2+……+(km*nm)^2]^1/2}；
wherein A is a compensation gray scale value, axFor a gray level of one sub-pixel of the target column, nxThe gray level value in the target row is axNumber of sub-pixels, kxA gray scale value of axX is 1, 2, 3. m-1, m.
Optionally, a pressurizing module 720 for:
and after the charging of each sub-pixel in the target frame is finished, loading a voltage corresponding to the compensation gray-scale value to the data line corresponding to the target column sub-pixel through the screen driving board.
Optionally, the display device further comprises:
and the adjusting module is used for adjusting the vertical blanking period from the first time length to a second time length when the frame rate reduction instruction is obtained, wherein the second time length is greater than the first time length, and the vertical blanking period is a period from the time when each sub-pixel in the target frame is completely charged to the time when the next frame of the target frame starts.
In addition, the present application also provides a display device, which includes a processor and a memory, where the memory stores at least one instruction, at least one program, a code set, or an instruction set, and the at least one instruction, the at least one program, the code set, or the instruction set is loaded and executed by the processor to implement the control method of the display device as described above.
In another aspect, the present application provides a computer storage medium having at least one instruction, at least one program, a set of codes, or a set of instructions stored therein, the at least one instruction, the at least one program, the set of codes, or the set of instructions being loaded and executed by a processor to implement the control method of the display apparatus as described above.
In another aspect, the present application provides a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the method provided in the various alternative implementations described above.
In this application, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (13)
1. A method of controlling a display device, the method comprising:
determining a compensation gray-scale value based on the gray-scale value of the target column sub-pixels in the target frame;
after charging of each sub-pixel in the target frame is completed, loading a voltage corresponding to the compensation gray scale value to a data line corresponding to the sub-pixel in the target row;
and before the next frame of the target frame starts, canceling the voltage loaded on the data line corresponding to the target column sub-pixel.
2. The method of claim 1, wherein determining a compensated gray scale value based on gray scale values of target column subpixels in the target frame comprises:
determining a weight of a sub-pixel in the target row of sub-pixels, wherein the gray scale value of the sub-pixel in the target row of sub-pixels is negatively related to the weight;
and determining the weighted average of the gray-scale values of the sub-pixels of the target column in the target frame as the compensation gray-scale value.
3. The method of claim 2, wherein the determining weights for sub-pixels in the target column of sub-pixels comprises:
when the gray-scale value of a first sub-pixel in the target row of sub-pixels is larger than a specified value, determining the weight of the first sub-pixel as a first target value;
and when the gray-scale value of the first sub-pixel is smaller than or equal to the designated value, determining that the weight value of the first sub-pixel is a second target value, wherein the second target value is larger than the first target value and is negatively related to the gray-scale value of the first sub-pixel.
4. The method according to claim 3, wherein the determining the weight of the first sub-pixel as a second target value comprises:
determining the weight of the first sub-pixel as a second target value according to a first formula, wherein the first formula comprises:
k＝c*b/a；
wherein k is the second target value, c is a preset parameter, b is the specified value, and a is the gray level value of the first subpixel.
5. The method according to claim 4, wherein the specified value is a gray-scale value corresponding to a target brightness, and when the brightness of the display device is lower than the target brightness, the flicker degree of the display device is greater than a target flicker degree.
6. The method of claim 4, wherein the predetermined parameter is in the range of 2-10.
7. The method according to any one of claims 2-6, wherein said determining a weighted average of the gray scale values of the target column of subpixels in the target frame as the compensated gray scale value comprises:
determining the compensated gray scale value by a second formula, the second formula comprising:
A＝[k1*a1*n1+k2*a2*n2……+km*am*nm]/[k1*n1+k2*n2+k3*n3……+km*nm]；
wherein A is the compensation gray scale value, axA gray level value, n, of one sub-pixel for said target columnxFor the gray level value in the target row as the axNumber of sub-pixels, kxThe gray scale value is axX is 1, 2, 3. m-1, m.
8. The method according to any one of claims 2-6, wherein said determining a weighted average of the gray scale values of the target column of subpixels in the target frame as the compensated gray scale value comprises:
determining the compensated gray scale value by a third formula, the third formula comprising:
A＝{[(k1*a1)^2*n1+(k2*a2)^2*n2+……+(km*am)^2*nm]^1/2}/{[(k1*n1)^2+(k2*n2)^2+……+(km*nm)^2]^1/2}；
wherein A is the compensation gray scale value, axA gray level value, n, of one sub-pixel for said target columnxFor the gray level value in the target row as the axNumber of sub-pixels, kxThe gray scale value is axX is 1, 2, 3. m-1, m.
9. The method of claim 1, wherein the loading the voltage corresponding to the compensated gray scale value to the data line corresponding to the target column of sub-pixels after the charging of each sub-pixel in the target frame is completed comprises:
and after the charging of each sub-pixel in the target frame is finished, loading a voltage corresponding to the compensation gray-scale value to a data line corresponding to the target column sub-pixel through a screen driving board.
10. The method of claim 1, wherein before determining the compensated gray scale value based on the gray scale values of the target column of subpixels in the target frame, the method further comprises:
when a frame rate reduction instruction is acquired, adjusting a vertical blanking period from a first time length to a second time length, wherein the second time length is greater than the first time length, and the vertical blanking period is a period from the time when each sub-pixel in the target frame is completely charged to the time when the next frame of the target frame starts.
11. A display device, characterized in that the display device comprises:
the determining module is used for determining a compensation gray-scale value based on the gray-scale value of the target column sub-pixels in the target frame;
the pressurizing module is used for loading the voltage corresponding to the compensation gray-scale value to the data line corresponding to the target column sub-pixel after the charging of each sub-pixel in the target frame is finished;
and the cancelling module is used for cancelling the voltage loaded on the data line corresponding to the target column sub-pixel before the next frame of the target frame starts.
12. A display apparatus, characterized in that the display apparatus comprises a processor and a memory, in which at least one instruction, at least one program, a set of codes, or a set of instructions is stored, which is loaded and executed by the processor to implement the control method of the display apparatus according to any one of claims 1 to 10.
13. A computer storage medium having stored therein at least one instruction, at least one program, a set of codes, or a set of instructions, which is loaded and executed by a processor to implement a method of controlling a display apparatus according to any one of claims 1 to 10.
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