CN113096577A - Driving method of display panel, driving chip and display device - Google Patents
Driving method of display panel, driving chip and display device Download PDFInfo
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- CN113096577A CN113096577A CN202110366222.5A CN202110366222A CN113096577A CN 113096577 A CN113096577 A CN 113096577A CN 202110366222 A CN202110366222 A CN 202110366222A CN 113096577 A CN113096577 A CN 113096577A
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Abstract
The application discloses a driving method of a display panel, a driving chip and a display device. The display panel comprises a functional area and a display area at least partially surrounding the functional area, and the functional area is a non-display area; the driving method of the display panel comprises the following steps: acquiring an image to be displayed; determining an average gray-scale value of a target area according to an image to be displayed, wherein the target area is an area in a display area, and the target area is adjacent to a function area in the extending direction of a data line; providing a gray scale value corresponding to the functional area, and enabling the difference value between the average gray scale value of the functional area under the provided gray scale value and the average gray scale value of the target area to be within a preset range. According to the embodiment of the application, the boundary between the functional area and the display area can be weakened, and the display effect is improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a driving method of a display panel, a driving chip and a display device.
Background
In order to pursue a higher screen ratio, more and more electronic devices (such as mobile phones) adopt a special-shaped screen, such as a "bang screen", "drop screen", "hole digging screen", and the like, which are common at present. The special-shaped screen is formed by designing a notch with a specific shape above the rectangular display screen, wherein the notch is used for placing components such as a camera and the like.
However, when an electronic device using a special-shaped screen displays an image, since the position of the notch is not displayed, a boundary line is easily formed between the position of the notch and a normal display area of the display screen, which affects the display effect.
Disclosure of Invention
The embodiment of the application provides a driving method of a display panel, a driving chip and a display device, which can weaken a boundary between a functional area and a display area and improve a display effect.
In a first aspect, an embodiment of the present application provides a method for driving a display panel, where the display panel includes a functional region and a display region at least partially surrounding the functional region, and the functional region is a non-display region; the embodiment of the application provides a driving method of a display panel, which comprises the following steps: acquiring an image to be displayed; determining an average gray-scale value of a target area according to an image to be displayed, wherein the target area is an area in a display area, and the target area is adjacent to a function area in the extending direction of a data line; providing a gray scale value corresponding to the functional area, and enabling the difference value between the average gray scale value of the functional area under the provided gray scale value and the average gray scale value of the target area to be within a preset range.
In a possible implementation manner of the first aspect, before providing the grayscale value corresponding to the functional region, the method includes:
determining a current average gray scale value corresponding to the functional area according to the current gray scale value corresponding to the functional area;
judging whether the difference value between the current average gray scale value and the average gray scale value of the target area is within a preset range or not;
if yes, providing a gray level corresponding to the functional area, including:
continuously providing the current gray-scale value corresponding to the functional area;
if not, adjusting the current gray-scale value corresponding to the functional area to obtain an adjusted gray-scale value, making the difference value between the average gray-scale value of the functional area under the adjusted gray-scale value and the average gray-scale value of the target area within a preset range, and providing the gray-scale value for the functional area, including:
providing the adjusted gray level value corresponding to the functional area.
In a possible implementation manner of the first aspect, the current grayscale value corresponding to the functional region includes any one of the following options:
and the current gray-scale values corresponding to the functional areas are all N, wherein N is a natural number, or the current gray-scale values corresponding to the functional areas are the gray-scale values of the areas corresponding to the positions of the functional areas in the image to be displayed.
In a possible implementation manner of the first aspect, the display area completely surrounds the functional area, the functional area includes a first functional area and a second functional area arranged along an extending direction of the data line, and the target area includes a first target area adjacent to the first functional area and a second target area adjacent to the second functional area;
determining an average gray scale value of a target area according to an image to be displayed, comprising:
determining an average gray scale value of the first target area and an average gray scale value of the second target area according to the image to be displayed;
providing a gray scale value corresponding to the functional area, and enabling the difference value between the average gray scale value of the functional area under the provided gray scale value and the average gray scale value of the target area to be within a preset range, wherein the method comprises the following steps:
providing a gray scale value corresponding to the first functional area, enabling the difference value between the average gray scale value of the first functional area under the provided gray scale value and the average gray scale value of the first target area to be within a preset range, providing a gray scale value corresponding to the second functional area, and enabling the difference value between the average gray scale value of the second functional area under the provided gray scale value and the average gray scale value of the second target area to be within the preset range.
In a possible implementation manner of the first aspect, the target area is provided with a plurality of rows of sub-pixel columns, the display panel includes a plurality of target data lines, and each row of sub-pixel columns corresponds to one target data line;
determining an average gray scale value of a target area according to an image to be displayed, comprising:
determining the average gray scale value of each column of sub-pixel columns according to the image to be displayed;
providing a gray scale value corresponding to the functional area, and enabling the difference value between the average gray scale value of the functional area under the provided gray scale value and the average gray scale value of the target area to be within a preset range, wherein the method comprises the following steps:
and providing the gray-scale value corresponding to the functional area by using any one of the target data lines, so that the difference value between the average gray-scale value corresponding to the functional area on any one of the target data lines and the average gray-scale value of the sub-pixel column is within a preset range.
In a possible implementation manner of the first aspect, providing a gray-scale value corresponding to the functional area by using any one target data line includes:
a plurality of equal gray scale values corresponding to the functional regions are provided using any one of the target data lines.
In a possible implementation manner of the first aspect, any column of sub-pixel columns includes a target sub-pixel adjacent to the functional area, and the providing, by using any one target data line, a gray-scale value corresponding to the functional area includes:
and providing a plurality of gray-scale values corresponding to the functional area by using any one target data line, wherein the plurality of gray-scale values corresponding to the functional area comprise target gray-scale values, the target gray-scale values are the same as the gray-scale values corresponding to the target sub-pixels, and the target gray-scale values and the gray-scale values corresponding to the target sub-pixels are adjacent to each other at the moment of being loaded on the target data line.
In a possible embodiment of the first aspect, a maximum dimension of the target area in the extension direction of the scan line is equal to a maximum dimension of the functional area in the extension direction of the scan line.
In a second aspect, based on the same inventive concept, an embodiment of the present application provides a driving chip for driving a display panel, where the display panel includes a functional region and a display region at least partially surrounding the functional region, and the functional region is a non-display region; the driving chip includes:
the image acquisition module is used for acquiring an image to be displayed;
the average gray scale determining module is used for determining an average gray scale value of a target area according to an image to be displayed, wherein the target area is an area in the display area, and the target area is adjacent to the non-display area in the extending direction of the data line;
and the gray scale supply module is used for providing a gray scale value corresponding to the functional area, so that the difference value between the average gray scale value of the functional area under the provided gray scale value and the average gray scale value of the target area is in a preset range.
In a third aspect, based on the same inventive concept, embodiments of the present application provide a display device including a driving chip as in the second aspect.
According to the driving method, the driving chip and the display device of the display panel provided by the embodiment of the application, the image to be displayed is obtained, the average gray-scale value of the target area adjacent to the functional area is determined according to the image to be displayed, when the image to be displayed is displayed, the gray-scale value corresponding to the functional area is provided, and the difference value between the average gray-scale value of the functional area under the provided gray-scale value and the average gray-scale value of the target area is in the preset range. Therefore, according to the display method and the display device, the gray-scale value corresponding to the functional area can be dynamically adjusted according to the actual display condition, the functional area is not enabled to correspond to the 0 gray scale all the time, and the difference value between the average gray-scale value of the functional area under the provided gray-scale value and the average gray-scale value of the target area is within the preset range, so that the data voltage on the data line cannot suddenly change, the coupling phenomenon of the data line and the power line is weakened, the potential on the power line cannot suddenly change, the phenomenon that bright lines or dark lines appear at the junction of the display area and the functional area can be weakened or avoided, and the display effect is improved.
Drawings
Other features, objects, and advantages of the present application will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.
Fig. 1 illustrates a schematic structural diagram of a display panel according to an embodiment of the present application;
FIG. 2 illustrates a schematic diagram of a coupling of a data signal to a power signal;
FIG. 3 illustrates another coupling scheme of a data signal and a power signal;
fig. 4 is a schematic flowchart illustrating a driving method of a display panel according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a display panel according to another embodiment of the present application;
fig. 6 is a schematic structural diagram of a display panel according to still another embodiment of the present application;
FIG. 7 is an enlarged schematic view of the functional zones and target areas of FIG. 5;
FIG. 8 is an enlarged schematic view of the functional zones and target areas of FIG. 6;
fig. 9 shows a schematic structural diagram of a driving chip according to an embodiment of the present application.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific 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. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In pursuit of higher screen occupation ratio, the display panel 100 may adopt a "dug screen" as shown in fig. 1. As shown in fig. 1, the display panel 100 includes a functional region FU and a display region AA, which at least partially surrounds the functional region FU. In fig. 1, the functional region FU is completely surrounded by the display region AA, and in the display panel 100 having the structure of "bang screen" or "droplet screen", the functional region FU is partially surrounded by the display region AA. The functional area FU can be correspondingly provided with a camera, a sensor, a receiver, a microphone and the like. It is to be understood that the functional region FU is a non-display region, and pixels capable of emitting light are not provided in the functional region FU. For example, neither a light-emitting element (a light-emitting element including an anode, an organic light-emitting layer, and a cathode which are provided in a stacked manner) nor a pixel drive circuit is provided in the functional region FU; or, the functional region FU can be evaporated with an organic light emitting layer, but a pixel driving circuit is not provided, so as to ensure that the functional region has high light transmittance.
For example, in order to avoid the display panel displaying an image, the display area AA around the functional area FU has a distinct jaggy feeling, the fillet optimization processing is performed on the display panel, and the fillet optimization processing usually provides a black picture for the functional area FU, that is, the Data line 11 of the display panel 100 is used to provide the Data voltage Data at 0 gray scale corresponding to the functional area FU. It can be understood that, although the Data voltage Data at the 0 gray scale provided by the Data line is not shown, the Data voltage Data at the 0 gray scale is still carried on the Data line at the corresponding time.
The applicant has found that when the display area AA displays a white picture or a high gray scale picture, if the Data voltage Data at 0 gray scale is still supplied to the functional area FU, a boundary line appears at the boundary between the display area AA and the functional area FU.
Illustratively, the display panel 100 includes a power supply line 12, the power supply line 12 being used to provide a positive voltage source to the sub-pixels of the display panel. Displaying 255 gray scale white picture with display area AA, subpixel current I ═ K (ELVDD-Data)2For example, where K is constant and ELVDD is the power on the power line 12And Data is a Data voltage. The applicant finds that, as shown in fig. 1 and fig. 2, at the boundary between the display area AA and the upper edge of the functional area FU, the Data line 11 provides the Data voltage Data at the 255 gray scale for the display area AA first, and then provides the Data voltage Data at the 0 gray scale for the functional area FU, while the Data voltage Data at the 255 gray scale is smaller than the Data voltage Data at the 0 gray scale, the Data voltage on the Data line 11 increases suddenly, the Data line 11 is coupled with the power line 12, so that the voltage on the power line 12 is distorted, the voltage on the power line 12 also increases, and as can be seen from the formula of the current I, the current also increases, and the luminance and the current are in positive correlation, so the luminance increases, so that a bright line L1 appears at the boundary between the display area AA and the upper edge of the functional area FU. In addition, as shown in fig. 1 and fig. 3, at the boundary between the display area AA and the lower edge of the functional area FU, the Data line 11 provides the Data voltage Data at 0 gray scale for the functional area FU, and then provides the Data voltage Data at 255 gray scale for the display area AA, and the Data voltage Data at 255 gray scale is smaller than the Data voltage Data at 0 gray scale, so that the Data voltage on the Data line 11 is suddenly reduced, the Data line 11 is coupled with the power line 12, which causes the voltage on the power line 12 to be distorted, and the voltage on the power line 12 is also reduced, as can be seen from the formula of the current I, the current is also reduced, and the brightness and the current are in positive correlation, so the brightness is reduced, and a dark line L2 appears at the boundary between the display area AA and the upper edge of the functional area FU.
The appearance of bright or dark lines at the interface between the display area AA and the functional area FU may also be referred to as line cross.
In order to reduce or avoid the above phenomenon, embodiments of the present application provide a driving method of a display panel, a driving chip and a display device, and the following describes embodiments of the driving method of the display panel, the driving chip and the display device with reference to the drawings.
Fig. 4 is a flowchart illustrating a driving method of a display panel according to an embodiment of the present disclosure. As shown in fig. 5 or fig. 6, the display panel 100 includes a functional region FU and a display region AA at least partially surrounding the functional region, where the functional region FU is a non-display region. As shown in fig. 4, the driving method of the display panel provided in the embodiment of the present application includes steps 110 to 130.
And step 110, acquiring an image to be displayed.
And 120, determining an average gray scale value of a target area according to the image to be displayed, wherein the target area is an area in the display area, and the target area is adjacent to the functional area in the extending direction of the data line.
According to the embodiment of the application, an image to be displayed is obtained first, the average gray scale value of a target area adjacent to a functional area is determined according to the image to be displayed, when the image to be displayed is displayed, the gray scale value corresponding to the functional area is provided, and the difference value between the average gray scale value of the functional area under the provided gray scale value and the average gray scale value of the target area is within a preset range. Therefore, according to the display method and the display device, the gray-scale value corresponding to the functional area can be dynamically adjusted according to the actual display condition, the functional area is not enabled to correspond to the 0 gray scale all the time, and the difference value between the average gray-scale value of the functional area under the provided gray-scale value and the average gray-scale value of the target area is within the preset range, so that the data voltage on the data line cannot suddenly change, the coupling phenomenon of the data line and the power line is weakened, the potential on the power line cannot suddenly change, the phenomenon that bright lines or dark lines appear at the junction of the display area and the functional area can be weakened or avoided, and the display effect is improved.
For example, before step 120, the position information of the functional area may be obtained, and a partial area adjacent to the functional area in the extending direction of the data line may be selected as the target area in the display area according to the position information of the functional area. Exemplarily, as shown in fig. 5 or fig. 6, taking the extending direction of the data line as the second direction Y as an example, the extending direction of the scan line of the display panel is the first direction X, and the first direction X intersects with the second direction Y. The target area TA may be located on both sides of the functional area FU in the second direction Y or on one side of the functional area FU in the second direction Y.
For example, the position information of the functional area may be determined according to the design information of the display panel, the position information of the sub-pixels around and adjacent to the functional area may be determined according to the position information of the functional area, and then the edge line of the functional area may be determined according to the position information of the sub-pixels around and adjacent to the functional area. It is understood that there are no sub-pixels within the functional region that are capable of emitting light. In addition, as shown in fig. 1, in the case where the functional area is completely surrounded by the display area, a winding manner may be employed so that the data lines can supply the data signals to the display areas located on both sides of the functional area in the second direction Y and the power lines can supply the positive voltage sources to the display areas located on both sides of the functional area in the second direction Y. That is, the data lines and the power lines are disposed around the functional region.
In addition, although there are no sub-pixels capable of emitting light in the functional region, the data lines corresponding to the functional region still carry data signals corresponding to the functional region, and the driving chip still outputs the data signals to the data lines, except that the data signals are not displayed. It is understood that the data lines corresponding to the functional regions are the same as the data lines corresponding to the target regions.
Illustratively, as shown in fig. 7, the target area TA includes a first target area TA1 adjacent to the upper edge of the functional area FU and a second target area TA2 adjacent to the lower edge of the functional area FU, and the first target area TA1 and the second target area TA2 collectively include a plurality of rows and a plurality of columns of subpixels PX. Prior to step 120, positional information of sub-pixels in the target region may be obtained. In step 120, a gray level value corresponding to each sub-pixel in the target region may be determined according to the data information of the image to be displayed and the position information of the sub-pixel in the target region, and then an average gray level value of the target region may be calculated according to the gray level value corresponding to each sub-pixel in the target region. For example, the average gray scale value of the target region is equal to the ratio of the sum of the gray scale values of the sub-pixels in the target region to the number of sub-pixels in the target region.
In order to better understand the gray scale values corresponding to the functional region, for example, as shown in fig. 7, taking the functional region FU including a plurality of rows and a plurality of columns of virtual subpixels VPX as an example, the gray scale values corresponding to the functional region can be understood as the gray scale values corresponding to each virtual subpixel in the functional region. It should be noted that the virtual sub-pixels are only for convenience of understanding the gray scale value information corresponding to the functional regions, and the virtual sub-pixels do not emit light and have no sub-pixels, and it can be understood that the sub-pixels may be disposed at the positions of the virtual sub-pixels, but actually the sub-pixels are not disposed at the positions, but the gray scale values corresponding to the virtual sub-pixels in the functional regions are carried on the data lines of the display panel. It should be understood that the gray scale values correspond to the data voltages, and providing the gray scale values corresponding to the functional regions may be understood as providing the data voltages corresponding to the functional regions. Although the data voltages corresponding to the functional regions are carried on the data lines, the data voltages are not written into any pixels capable of emitting light, that is, the data voltages corresponding to the functional regions are not displayed. In addition, besides providing the gray scale value corresponding to the functional area, also providing the gray scale value corresponding to the display area, that is, also providing the data voltage corresponding to the display area, the data voltage corresponding to the display area will be written into each sub-pixel of the display area, thereby being displayed by each sub-pixel of the display area. For example, taking a solid-color image with a 15-gray scale to be displayed as an example, in the process of driving the display panel to display, a gray scale value corresponding to the functional region and a gray scale value corresponding to the display region are provided (it is understood that each gray scale value provided to the display region is 15), the display region displays the solid-color image with the 15-gray scale, but the functional region is a non-display region, and the functional region does not display the image. For example, the functional region may be always black in the display effect regardless of the gray level of the image to be displayed.
For example, in step 130, a gray-scale value corresponding to each virtual sub-pixel in the functional area may be provided, and an average gray-scale value of the functional area at the provided gray-scale value is equal to a ratio of a sum of the gray-scale values of each virtual sub-pixel in the functional area to the number of virtual sub-pixels in the functional area.
For example, the preset range may be set empirically. For example, the predetermined range may be (-85, 85). Of course, the preset range may be set smaller in order to better reduce the abrupt change of the data voltage on the data line.
In some optional embodiments, before step 130, the method for driving a display panel provided in the embodiments of the present application may further include: determining a current average gray scale value corresponding to the functional area according to the current gray scale value corresponding to the functional area; judging whether the difference value between the current average gray scale value and the average gray scale value of the target area is within a preset range or not; if yes, the step 130 of providing the gray scale value corresponding to the functional area includes: continuing to provide the current gray scale value corresponds to the functional area; if not, adjusting the current gray scale value corresponding to the functional area to obtain an adjusted gray scale value, so that the difference between the average gray scale value of the functional area under the adjusted gray scale value and the average gray scale value of the target area is within a preset range, and the step 130 of providing the gray scale value corresponding to the functional area includes: providing the adjusted gray level value corresponding to the functional area.
The current gray-scale value corresponding to the functional area can be understood as the gray-scale value corresponding to the functional area when the display panel displays the current image. The current average gray-scale value corresponding to the functional area is equal to the ratio of the sum of the current gray-scale values of the virtual sub-pixels in the functional area to the number of the virtual sub-pixels in the functional area.
The average gray-scale value of the target area in the embodiment of the present application is still the average gray-scale value of the target area under the image to be displayed.
If the difference between the current average gray scale value and the average gray scale value of the target area is within the preset range, the current gray scale value corresponding to the functional area does not need to be adjusted, and correspondingly, in step 130, only the current gray scale value corresponding to the functional area needs to be continuously provided. If the difference between the current average gray scale value and the average gray scale value of the target area is not within the preset range, the current gray scale value corresponding to the functional area needs to be adjusted, the adjusted gray scale value can be obtained after the adjustment, and the difference between the average gray scale value of the functional area under the adjusted gray scale value and the average gray scale value of the target area is within the preset range, correspondingly in step 130, the adjusted gray scale value is provided to correspond to the functional area.
For example, the current gray-scale value corresponding to the functional area may be adjusted, the current gray-scale value corresponding to each virtual sub-pixel in the functional area may be adjusted, or only the current gray-scale value corresponding to a part of the virtual sub-pixels in the functional area may be adjusted, as long as a difference between an average gray-scale value of the functional area under the adjusted gray-scale value and an average gray-scale value of the target area is within a preset range.
According to the embodiment of the application, the function area can correspond to a proper gray scale value under the image to be displayed, so that when the display panel displays the image to be displayed, the data voltage mutation corresponding to the junction of the function area and the target area of the data line is avoided, the coupling phenomenon of the data line and the power line is weakened, the potential on the power line cannot mutate, the phenomenon of bright lines or dark lines at the junction of the function area and the display area can be weakened or avoided, and the display effect is improved.
In some optional embodiments, the current gray-scale value corresponding to the functional region includes any one of the following options: and the current gray-scale values corresponding to the functional areas are all N, wherein N is a natural number, or the current gray-scale values corresponding to the functional areas are the gray-scale values of the areas corresponding to the positions of the functional areas in the image to be displayed.
For example, N is 0, that is, a black screen is provided to the functional region. For example, N is not 0, for example, N is 25, 50, 100, etc. For another example, the gray scale value of the region corresponding to the position of the corresponding function region in the image to be displayed is 65, and the current gray scale value corresponding to the function region is 65, that is, the gray scale value of the region corresponding to the position of the corresponding function region in the image to be displayed is directly provided to the function region, and the gray scale value processing is not performed any more.
According to the embodiment of the application, multiple providing modes can be set for providing the gray-scale values corresponding to the functional areas, so that the using functions of the display panel are enriched, and different requirements of users are met.
In some alternative embodiments, as shown in fig. 5, the display area AA completely surrounds the functional area FU, the functional area FU includes a first functional area FU1 and a second functional area FU2 arranged in the extending direction of the data lines, and the target area TA includes a first target area TA1 adjacent to the first functional area FU1 and a second target area TA2 adjacent to the second functional area FU 2. In this application, taking the data line along the second direction Y as an example, the second direction Y may be a column direction. The first and second functional regions FU1, FU2 may be identical in shape and size, that is, the functional regions FU may be equally divided into first and second functional regions FU1, FU 2. The first target area TA1 and the second target area TA2 may have the same shape and size.
Step 120 may include: and determining the average gray scale value of the first target area and the average gray scale value of the second target area according to the image to be displayed. Correspondingly, step 130 may include: providing a gray scale value corresponding to the first functional area, enabling the difference value between the average gray scale value of the first functional area under the provided gray scale value and the average gray scale value of the first target area to be within a preset range, providing a gray scale value corresponding to the second functional area, and enabling the difference value between the average gray scale value of the second functional area under the provided gray scale value and the average gray scale value of the second target area to be within the preset range.
Illustratively, the average gray scale value of the first target area is equal to the ratio of the sum of the gray scale values of the sub-pixels in the first target area to the number of sub-pixels in the first target area, and the average gray scale value of the second target area is equal to the ratio of the sum of the gray scale values of the sub-pixels in the second target area to the number of sub-pixels in the second target area. The average gray-scale value of the first functional area at the provided gray-scale value is equal to the ratio of the sum of the gray-scale values of the virtual sub-pixels in the first functional area to the number of the virtual sub-pixels in the first functional area, and the average gray-scale value of the second functional area at the provided gray-scale value is equal to the ratio of the sum of the gray-scale values of the virtual sub-pixels in the second functional area to the number of the virtual sub-pixels in the second functional area.
Under the condition that the display area completely surrounds the functional area, in the extending direction of the data line, two junctions exist between the display area and the functional area, in the embodiment of the application, the functional area is divided into two functional areas distributed along the extending direction of the data line, and a target area is respectively arranged for the two functional areas, so that the difference value between the average gray scale value of each functional area under the provided gray scale value and the average gray scale value of the corresponding target area is within a preset range, and thus, the data voltage corresponding to the data line at the two junctions between the functional area and the target area cannot suddenly change, the coupling phenomenon between the data line and the power line is weakened, the potential on the power line cannot suddenly change, the phenomenon of bright lines or dark lines at the two junctions between the display area and the functional area can be weakened or avoided, and the display effect is improved.
In some alternative embodiments, as shown in fig. 8, the target area TA has a plurality of rows of sub-pixel columns 21, the display panel includes a plurality of target data lines 111, and each row of sub-pixel columns 21 corresponds to one target data line 111. For better understanding of the corresponding relationship between the functional region FU and the plurality of target data lines 111, the functional region FU exemplarily includes a plurality of virtual sub-pixel columns 22, the plurality of virtual sub-pixel columns 22 correspond to the plurality of sub-pixel columns 21 one to one, and the corresponding sub-pixel columns 21 and the virtual sub-pixel columns 22 correspond to the same target data line 111. That is, the number of columns of the subpixels in the target area TA, the number of columns of the dummy subpixels VPX in the functional area FU, and the number of target data lines 111 are the same.
The method and the device prevent the data voltage on the same target data line from suddenly changing at the junction of the functional area and the display area, namely prevent the gray scale value on the same target data line from suddenly changing at the junction of the functional area and the display area. Thus, step 120 may comprise: and determining the average gray-scale value of each column of sub-pixel columns according to the image to be displayed. Step 130 may include: and providing the gray-scale value corresponding to the functional area by using any one target data line, so that the difference value between the average gray-scale value corresponding to the functional area on any one target data line and the average gray-scale value of the sub-pixel row is within a preset range. That is, for any corresponding one of the virtual sub-pixel rows and one of the sub-pixel rows, the gray scale value corresponding to the virtual sub-pixel row is provided by the target data line, so that the difference between the average gray scale value of the virtual sub-pixel row at the provided gray scale value and the average gray scale value of the sub-pixel row is within the preset range.
For example, as shown in fig. 8, the average gray scale value of the sub-pixel column may be equal to the ratio of the gray scale value of each sub-pixel in the sub-pixel column to the number of sub-pixels in the sub-pixel column. The average gray scale value of the virtual sub-pixel column at the provided gray scale value may be equal to a ratio of the gray scale value of each virtual sub-pixel in the virtual sub-pixel column to the number of virtual sub-pixels in the virtual sub-pixel column.
According to the embodiment of the application, the data voltage on any one target data line in the target data lines corresponding to the functional area and the target area can not be suddenly changed, so that the coupling phenomenon of the data line and the power line can be effectively weakened, the potential on the power line can not be suddenly changed, the phenomenon of bright lines or dark lines at the junction of the display area and the functional area can be weakened or avoided, and the display effect is improved.
It is to be understood that, as shown in fig. 5 and 7, in the case where the functional area includes a first functional area and a second functional area, and the target area includes a first target area and a second target area, a plurality of columns of sub-pixel columns in the first target area correspond to a plurality of columns of virtual sub-pixel columns in the first functional area one to one, and a plurality of columns of sub-pixel columns in the second target area correspond to a plurality of columns of virtual sub-pixel columns in the second functional area one to one. Step 120 may include: and determining the average gray-scale value of each column of sub-pixel columns in the first target area and the average gray-scale value of each column of sub-pixel columns in the second target area according to the image to be displayed. Step 130 may include: providing a gray scale value corresponding to the first functional area by using any one target data line, and enabling the difference value between the average gray scale value corresponding to the first functional area on any one target data line and the average gray scale value of the sub-pixel columns in the first target area to be within the preset range; and providing the gray-scale value corresponding to the second functional area, and enabling the difference value between the average gray-scale value corresponding to the second functional area on any one target data line and the average gray-scale value of the sub-pixel columns in the second target area to be within the preset range.
That is, for any corresponding column of virtual sub-pixel columns and a column of sub-pixel columns, the gray-scale value corresponding to the virtual sub-pixel column in the first functional area is provided by the target data line, the difference between the average gray-scale value of the virtual sub-pixel column in the first functional area at the provided gray-scale value and the average gray-scale value of the sub-pixel column in the first target area is within a preset range, the gray-scale value corresponding to the virtual sub-pixel column in the second functional area is provided by the target data line, and the difference between the average gray-scale value of the virtual sub-pixel column in the second functional area at the provided gray-scale value and the average gray-scale value of the sub-pixel column in the second target area is within a preset range.
In addition, since the functional region FU is provided with a photosensitive element such as a camera, the target data line 111 is wound as shown in fig. 7, and the target data line 111 is provided around the functional region FU. Power supply lines (not shown in fig. 7), scan lines (not shown in fig. 7), and the like may also be provided around the functional region FU. In some optional embodiments, providing the gray-scale value corresponding to the functional area by using any one of the target data lines may include: a plurality of equal gray scale values corresponding to the functional regions are provided using any one of the target data lines.
For better understanding, the plurality of gray-scale values corresponding to the functional area on the target data line are equal, as shown in fig. 8, the virtual sub-pixel column 22 includes a plurality of virtual sub-pixels VPX, and providing the gray-scale value corresponding to the functional area by using any one target data line may include: corresponding to any virtual sub-pixel column, the same gray-scale value corresponding to a plurality of virtual sub-pixels is provided by using the target data line. That is to say, for any one of the virtual sub-pixel rows in the plurality of virtual sub-pixel rows in the functional area, each virtual sub-pixel in the same virtual sub-pixel row corresponds to the same gray-scale value, so that a gray-scale difference between adjacent virtual sub-pixels in the same virtual sub-pixel row can be avoided, and a data voltage provided by the target data line and corresponding to the functional area is prevented from sudden change.
In some optional embodiments, any column of sub-pixel columns includes a target sub-pixel adjacent to the functional area, and providing a gray-scale value corresponding to the functional area by using any one target data line may include: and providing a plurality of gray-scale values corresponding to the functional area by using any one target data line, wherein the plurality of gray-scale values corresponding to the functional area comprise target gray-scale values, the target gray-scale values are the same as the gray-scale values corresponding to the target sub-pixels, and the target gray-scale values and the gray-scale values corresponding to the target sub-pixels are adjacent to each other at the moment of being loaded on the target data line.
In order to better understand that the target gray-scale value is the same as the gray-scale value corresponding to the target sub-pixel, as shown in fig. 8, the virtual sub-pixel column 22 includes a plurality of virtual sub-pixels VPX, the sub-pixel column 21 includes a plurality of sub-pixels PX, a virtual sub-pixel VPX adjacent to the target area TA among the plurality of virtual sub-pixels VPX in any one column is the target virtual sub-pixel, the gray-scale value corresponding to the target virtual sub-pixel is the target gray-scale value, and a sub-pixel PX adjacent to the functional area FU among the plurality of sub-pixels PX in any one column is the target sub-pixel. It can be understood that the target virtual sub-pixel is adjacent to the target sub-pixel, and the target data line successively carries the target gray-scale value corresponding to the target virtual sub-pixel and the gray-scale value corresponding to the target sub-pixel, so that the time when the target gray-scale value and the gray-scale value corresponding to the target sub-pixel are carried on the target data line is adjacent.
Providing a plurality of gray scale values corresponding to the functional region by using any one of the target data lines, wherein the plurality of gray scale values corresponding to the functional region include a target gray scale value, the target gray scale value is the same as the gray scale value corresponding to the target sub-pixel, and the target gray scale value is adjacent to the time when the gray scale value corresponding to the target sub-pixel is loaded on the target data line, and the method may include: for any corresponding column of virtual sub-pixel columns and a column of sub-pixel columns, gray-scale values corresponding to the virtual sub-pixels are provided by using the target data, and the gray-scale values of the adjacent target virtual sub-pixels are the same as the gray-scale values of the target sub-pixels.
For example, for any corresponding column of virtual sub-pixel columns and a column of sub-pixel columns, the gray scale values of the virtual sub-pixels in the column of virtual sub-pixel columns may be different, the gray scale values of the sub-pixels in the column of sub-pixel columns may be different, but the gray scale values of the adjacent virtual sub-pixels are the same as the gray scale values of the sub-pixels. Therefore, the data voltage of the target data line corresponding to the functional area and the target area at the junction of the functional area and the target area is not suddenly changed, so that the coupling phenomenon of the target data line and the power line is avoided, the potential on the power line is not suddenly changed, the phenomenon of bright lines or dark lines at the junction of the display area and the functional area is avoided, and the display effect is improved.
In any of the above embodiments, the maximum dimension of the target area in the extending direction of the scan line is equal to the maximum dimension of the functional region in the extending direction of the scan line. For example, it is understood that, as shown in fig. 5 and 7, in the case where the functional regions include a first functional region and a second functional region, and the target regions include a first target region and a second target region, the maximum dimension of the first target region in the extending direction of the scan line is equal to the maximum dimension of the first functional region in the extending direction of the scan line, and the maximum dimension of the second target region in the extending direction of the scan line is equal to the maximum dimension of the second functional region in the extending direction of the scan line.
According to the embodiment of the application, the number of the data lines corresponding to the target area and the functional area can be equal, that is, the data voltage on any one of the data lines corresponding to the functional area and the target area can not be suddenly changed.
The driving method of the display panel provided by the embodiment of the application can be executed by the driving chip.
Based on the same inventive concept, the embodiment of the present application further provides a driving chip 200. As shown in fig. 9, the driving chip provided in the embodiment of the present application includes an image obtaining module 201, an average gray level determining module 202, and a gray level providing module 203. The driving chip 200 is configured to drive a display panel, where the display panel includes a functional region and a display region at least partially surrounding the functional region, and the functional region is a non-display region.
An image obtaining module 201, configured to obtain an image to be displayed.
The average gray level determining module 202 is configured to determine an average gray level value of a target area according to an image to be displayed, where the target area is an area in a display area, and the target area is adjacent to a non-display area in an extending direction of a data line.
The gray scale providing module 203 is configured to provide a gray scale value corresponding to the functional region, so that a difference between an average gray scale value of the functional region under the provided gray scale value and an average gray scale value of the target region is within a preset range.
In some alternative embodiments, the average gray level determination module 202 is further configured to: and determining the current average gray scale value corresponding to the functional area according to the current gray scale value corresponding to the functional area.
The driving chip 200 provided in the embodiment of the present application may further include a determining module, where the determining module is configured to: and judging whether the difference value between the current average gray scale value and the average gray scale value of the target area is within a preset range.
If so, the grayscale providing module 203 is specifically configured to: continuing to provide the current gray scale value corresponds to the functional area;
the driving chip 200 provided in the embodiment of the present application may further include a gray scale adjustment module, and if not, the gray scale adjustment module is configured to: adjusting the current gray scale value corresponding to the functional region to obtain an adjusted gray scale value, so that a difference between an average gray scale value of the functional region under the adjusted gray scale value and an average gray scale value of the target region is within a preset range, and the gray scale supplying module 203 is specifically configured to: providing the adjusted gray level value corresponding to the functional area.
In some optional embodiments, the current gray-scale value corresponding to the functional region includes any one of the following options:
and the current gray-scale values corresponding to the functional areas are all N, wherein N is a natural number, or the current gray-scale values corresponding to the functional areas are the gray-scale values of the areas corresponding to the positions of the functional areas in the image to be displayed.
In some optional embodiments, the display area completely surrounds the functional area, the functional area includes a first functional area and a second functional area arranged along an extending direction of the data line, and the target area includes a first target area adjacent to the first functional area and a second target area adjacent to the second functional area;
the average gray level determining module 202 is specifically configured to: determining an average gray scale value of the first target area and an average gray scale value of the second target area according to the image to be displayed;
the grayscale supply module 203 is specifically configured to: providing a gray scale value corresponding to the first functional area, enabling the difference value between the average gray scale value of the first functional area under the provided gray scale value and the average gray scale value of the first target area to be within a preset range, providing a gray scale value corresponding to the second functional area, and enabling the difference value between the average gray scale value of the second functional area under the provided gray scale value and the average gray scale value of the second target area to be within the preset range.
In some optional embodiments, the target area is provided with a plurality of columns of sub-pixel columns, the display panel includes a plurality of target data lines, and each column of sub-pixel column corresponds to one target data line;
the average gray level determining module 202 is specifically configured to: determining the average gray scale value of each column of sub-pixel columns according to the image to be displayed; the grayscale supply module 203 is specifically configured to: and providing the gray-scale value corresponding to the functional area by using any one target data line, so that the difference value between the average gray-scale value corresponding to the functional area on any one target data line and the average gray-scale value of the sub-pixel row is within a preset range. .
In some optional embodiments, the grayscale provisioning module 203 is specifically configured to: a plurality of equal gray scale values corresponding to the functional regions are provided using any one of the target data lines.
In some optional embodiments, any row of sub-pixel rows includes a target sub-pixel adjacent to the functional region, and the grayscale supply module 203 is specifically configured to: and providing a plurality of gray-scale values corresponding to the functional area by using any one target data line, wherein the plurality of gray-scale values corresponding to the functional area comprise target gray-scale values, the target gray-scale values are the same as the gray-scale values corresponding to the target sub-pixels, and the target gray-scale values and the gray-scale values corresponding to the target sub-pixels are adjacent to each other at the moment of being loaded on the target data line.
In some alternative embodiments, the maximum dimension of the target area in the extension direction of the scan lines is equal to the maximum dimension of the functional area in the extension direction of the scan lines.
Based on the same inventive concept, the embodiment of the invention also provides a display device, which comprises the driving chip. The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. The implementation of the display device can refer to the above embodiment of the driving chip, and repeated descriptions are omitted.
An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method for driving a display panel in the foregoing embodiment can be implemented, and the same technical effect can be achieved. The computer-readable storage medium may include a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like, which is not limited herein.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. "computer-readable media" may include any medium that can store or transfer information. Examples of computer readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc. Examples of computer readable media include non-transitory computer readable storage media.
It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
Aspects of the present application are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware for performing the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In accordance with the embodiments of the present application as described above, these embodiments are not exhaustive and do not limit the application to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and its practical application, to thereby enable others skilled in the art to best utilize the application and its various modifications as are suited to the particular use contemplated. The application is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A driving method of a display panel is characterized in that the display panel comprises a functional area and a display area at least partially surrounding the functional area, wherein the functional area is a non-display area;
the method comprises the following steps:
acquiring an image to be displayed;
determining an average gray scale value of a target area according to the image to be displayed, wherein the target area is an area in the display area, and the target area is adjacent to the functional area in the extending direction of the data line;
providing a gray scale value corresponding to the functional area, and enabling the difference value between the average gray scale value of the functional area under the provided gray scale value and the average gray scale value of the target area to be within a preset range.
2. The method according to claim 1, wherein before the providing the gray scale value corresponding to the functional region, the method comprises:
determining a current average gray scale value corresponding to the functional area according to the current gray scale value corresponding to the functional area;
judging whether the difference value between the current average gray scale value and the average gray scale value of the target area is within the preset range or not;
if yes, the providing the gray scale value corresponding to the functional area comprises:
continuing to provide the current gray-scale value corresponding to the functional area;
if not, adjusting the current gray-scale value corresponding to the functional area to obtain an adjusted gray-scale value, so that the difference value between the average gray-scale value of the functional area under the adjusted gray-scale value and the average gray-scale value of the target area is within the preset range, and providing the gray-scale value corresponding to the functional area comprises the following steps:
providing the adjusted gray scale value corresponding to the functional area.
3. The method according to claim 2, wherein the current gray level value corresponding to the functional region comprises any one of the following options:
and the current gray scale values corresponding to the functional areas are all N, wherein N is a natural number, or the current gray scale values corresponding to the functional areas are gray scale values of areas corresponding to the positions of the functional areas in the image to be displayed.
4. The method of driving a display panel according to claim 1, wherein the display area completely surrounds the functional area, the functional area includes a first functional area and a second functional area arranged in an extending direction of the data line, and the target area includes a first target area adjacent to the first functional area and a second target area adjacent to the second functional area;
the determining the average gray scale value of the target area according to the image to be displayed comprises the following steps:
determining an average gray scale value of the first target area and an average gray scale value of the second target area according to the image to be displayed;
providing a gray scale value corresponding to the functional area, and enabling a difference value between an average gray scale value of the functional area under the provided gray scale value and an average gray scale value of the target area to be within a preset range, wherein the method comprises the following steps:
providing a gray scale value corresponding to the first functional area, enabling the difference value between the average gray scale value of the first functional area under the provided gray scale value and the average gray scale value of the first target area to be within the preset range, providing a gray scale value corresponding to the second functional area, and enabling the difference value between the average gray scale value of the second functional area under the provided gray scale value and the average gray scale value of the second target area to be within the preset range.
5. The method according to claim 1, wherein the target area has a plurality of columns of sub-pixels, the display panel comprises a plurality of target data lines, and each column of the sub-pixel corresponds to one of the target data lines;
the determining the average gray scale value of the target area according to the image to be displayed comprises the following steps:
determining the average gray scale value of each row of the sub-pixel rows according to the image to be displayed;
providing the gray scale value corresponding to the functional area, and enabling the difference value between the average gray scale value of the functional area under the provided gray scale value and the average gray scale value of the target area to be within a preset range, wherein the method comprises the following steps:
and providing a gray scale value corresponding to the functional area by using any one of the target data lines, so that the difference value between the average gray scale value corresponding to the functional area on any one of the target data lines and the average gray scale value of the sub-pixel column is within the preset range.
6. The method according to claim 5, wherein the providing a gray scale value corresponding to the functional area using any one of the target data lines comprises:
and providing a plurality of equal gray-scale values corresponding to the functional areas by using any one of the target data lines.
7. The method according to claim 5, wherein any column of the sub-pixel columns comprises a target sub-pixel adjacent to the functional area, and the providing the gray-scale value corresponding to the functional area by using any one of the target data lines comprises:
and providing a plurality of gray-scale values corresponding to the functional area by using any one of the target data lines, wherein the plurality of gray-scale values corresponding to the functional area comprise target gray-scale values, the target gray-scale values are the same as the gray-scale values corresponding to the target sub-pixels, and the target gray-scale values are adjacent to the gray-scale values corresponding to the target sub-pixels at the moment of being borne on the target data lines.
8. The method for driving a display panel according to any one of claims 1 to 7, wherein a maximum size of the target region in an extending direction of the scanning line is equal to a maximum size of the functional region in the extending direction of the scanning line.
9. The driving chip is used for driving a display panel, the display panel comprises a functional area and a display area at least partially surrounding the functional area, and the functional area is a non-display area; the driving chip includes:
the image acquisition module is used for acquiring an image to be displayed;
the average gray scale determining module is used for determining an average gray scale value of a target area according to the image to be displayed, wherein the target area is an area in the display area, and the target area is adjacent to the non-display area in the extending direction of the data line;
and the gray scale supplying module is used for providing a gray scale value corresponding to the functional area, so that the difference value between the average gray scale value of the functional area under the provided gray scale value and the average gray scale value of the target area is in a preset range.
10. A display device comprising the driver chip according to claim 9.
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