Display device and display method thereof

Abstract

The application discloses a display device and a display method thereof. The display device comprises sub-pixels of multiple color types, and the light-emitting colors of the sub-pixels of different color types are different. The display method comprises the following steps: acquiring the segment number of a first type display gray scale, the continuous column number of each segment and the column position of each segment in a pixel row to be compensated; acquiring the continuous row number of the pixel row displaying the first type display gray scale according to the segment number, the continuous column number of each segment and the column position of each segment; determining the gray scale compensation value of the sub-pixel of a second type display gray scale in the pixel row to be compensated according to the segment number, the continuous row number, the total column number of the first type display gray scale in the pixel row to be compensated and the row position of the pixel row to be compensated; and compensating the gray scale of the sub-pixel by using the gray scale compensation value corresponding to the sub-pixel; wherein the gray scale difference between the first type display gray scale and the second type display gray scale is greater than a first preset value. The application can improve the problem of unexpected bright lines and dark lines in the display device during display.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display device and a display method thereof. BACKGROUND

[0002] With the development of display technology, display devices are applied more and more widely, and the requirements for display devices are also higher and higher.

[0003] However, the existing display device will appear an unexpected bright line or dark line when displaying, which seriously affects the display effect. SUMMARY

[0004] The present application provides a display device and a display method thereof to improve the problem of unexpected bright line or dark line when displaying.

[0005] According to an aspect of the present application, a display method of a display device is provided, the display device comprising sub-pixels of multiple color types, the sub-pixels of different color types having different light-emitting colors, the display method comprising:

[0006] obtaining the number of segments of a first type of display gray scale, the number of continuous columns of each segment and the column position of each segment in a pixel row to be compensated;

[0007] obtaining the number of continuous rows of pixel rows displaying the first type of display gray scale with the number of segments, the number of continuous columns of each segment and the column position of each segment;

[0008] determining a gray scale compensation value of a sub-pixel of a second type of display gray scale in the pixel row to be compensated according to the number of segments, the number of continuous rows, the total number of columns of the first type of display gray scale in the pixel row to be compensated and the row position of the pixel row to be compensated;

[0009] compensating the gray scale of the sub-pixel by using the corresponding gray scale compensation value of the sub-pixel;

[0010] wherein the gray scale difference between the first type of display gray scale and the second type of display gray scale is greater than a first preset value.

[0011] Optionally, the first type of display gray scale is a display gray scale with a gray scale difference from a first display gray scale less than a second preset value; and the second type of display gray scale is a display gray scale with a gray scale difference from a second display gray scale less than a third preset value.

[0012] Optionally, the display device stores a compensation table group corresponding to the pixel row to be compensated for each row position, each compensation table group comprising a compensation table corresponding to each number of segments, and the compensation table comprising a gray scale compensation value corresponding to the total number of columns and a gray scale compensation value corresponding to the number of continuous rows.

[0013] The determining the gray scale compensation value of each color sub-pixel of the second type display gray scale in the pixel row to be compensated according to the segment number, the continuous row number, the total column number of the first type display gray scale in the pixel row to be compensated, and the row position of the pixel row to be compensated comprises:

[0014] The corresponding compensation table is called according to the row position and the segment number;

[0015] The corresponding gray scale compensation value is obtained according to the total column number;

[0016] The corresponding gray scale compensation value is obtained according to the continuous row number;

[0017] The sum of the gray scale compensation value corresponding to the total column number and the gray scale compensation value corresponding to the continuous row number is taken as the gray scale compensation value of the corresponding sub-pixel of the second type display gray scale in the pixel row to be compensated.

[0018] Optionally, the compensation table set comprises a first compensation table and a second compensation table;

[0019] The calling the corresponding compensation table according to the row position and the segment number comprises:

[0020] If the segment number is one, the first compensation table is called; if the segment number is greater than or equal to two, the second compensation table is called.

[0021] Optionally, the compensation table further comprises the polarity of the gray scale compensation value corresponding to the total column number and the polarity of the gray scale compensation value corresponding to the continuous row number.

[0022] Optionally, the polarities of the gray scale compensation values corresponding to the total column number in the first compensation table are the same, and the polarities of the gray scale compensation values corresponding to the continuous row number in the first compensation table are the same.

[0023] Optionally, before the gray scale compensation of the sub-pixel is performed by using the gray scale compensation value corresponding to the sub-pixel, the method further comprises:

[0024] The first compensation coefficient of the gray scale compensation value of the sub-pixel is determined according to the maximum display brightness of the display device;

[0025] The gray scale compensation value is updated by using the first compensation coefficient;

[0026] And / or, the second compensation coefficient of the gray scale compensation value of the sub-pixel is determined according to the refresh frame rate of the display device;

[0027] The gray scale compensation value of the sub-pixel is updated by using the second compensation coefficient.

[0028] According to another aspect of the present application, there is also provided a display device comprising a plurality of sub-pixels of different color types, the sub-pixels of different color types having different light-emitting colors, the display device further comprising:

[0029] a first obtaining module configured to obtain a number of segments of a first type of display gray scale, a number of continuous columns per segment, and a column position per segment in a pixel row to be compensated;

[0030] a second obtaining module configured to obtain a number of continuous rows of pixel rows displaying the first type of display gray scale according to the number of segments, the number of continuous columns per segment, and the column position per segment;

[0031] a calculating module configured to determine a gray scale compensation value of a sub-pixel of a second type of display gray scale in the pixel row to be compensated according to the number of segments, the number of continuous rows, a total number of columns of the first type of display gray scale in the pixel row to be compensated, and a row position of the pixel row to be compensated;

[0032] a compensating module configured to compensate the gray scale of the sub-pixel by using the gray scale compensation value corresponding to the sub-pixel;

[0033] wherein a gray scale difference between the first type of display gray scale and the second type of display gray scale is greater than a first preset value.

[0034] Optionally, the display device further comprises a storage module, the storage module storing a compensation table group corresponding to the pixel row to be compensated for each row position, each compensation table group comprising a compensation table corresponding to each number of segments, and the compensation table comprising a gray scale compensation value corresponding to the total number of columns and a gray scale compensation value corresponding to the number of continuous rows;

[0035] the calculating module being configured to retrieve a corresponding compensation table according to the row position and the number of segments, obtain a corresponding gray scale compensation value according to the total number of columns, obtain a corresponding gray scale compensation value according to the number of continuous rows, and take a sum of the gray scale compensation value corresponding to the total number of columns and the gray scale compensation value corresponding to the number of continuous rows as a gray scale compensation value of each color sub-pixel of the second type of display gray scale in the pixel row to be compensated.

[0036] Optionally, the compensation table group comprises a first compensation table and a second compensation table.

[0037] the calculating module being configured to call the first compensation table if the number of segments is one, and call the second compensation table if the number of segments is greater than or equal to two.

[0038] The display method of the display device comprises the following steps: acquiring the segment number of the first type display gray scale in the pixel row to be compensated, the continuous column number of each segment, and the column position of each segment; acquiring the continuous row number of the pixel row displaying the first type display gray scale according to the segment number, the continuous column number of each segment, and the column position of each segment; determining the gray scale compensation value of the sub-pixel of the second type display gray scale in the pixel row to be compensated according to the segment number, the continuous row number, the total column number of the first type display gray scale in the pixel row to be compensated, and the row position of the pixel row to be compensated; and compensating the sub-pixel by using the gray scale compensation value corresponding to the sub-pixel; wherein the gray scale difference between the first type display gray scale and the second type display gray scale is greater than a first preset value. In the calculation of the gray scale compensation value of each sub-pixel, not only the different color sub-pixels are compensated respectively, but also the segment number of the first type display gray scale in the pixel row to be compensated is considered, so that the voltage crosstalk problem at the junction of the display pattern can be improved, and the problems such as bright line, dark line or color cast at the junction can be improved.

[0039] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0041] Figure 1 It is a structural schematic diagram of an existing display device;

[0042] Figure 2 It is an experimental diagram of power supply voltage distortion when the gray scale is a kind of gray scale mutation;

[0043] Figure 3 It is an experimental diagram of power supply voltage distortion when another kind of gray scale mutation;

[0044] Figure 4 It is a brightness change diagram of each sub-pixel when a kind of gray scale mutation;

[0045] Figure 5 It is a flow chart of a display method of a display device provided by the embodiment of the present application;

[0046] Figure 6 It is a structural schematic diagram of another display device provided by the embodiment of the present application. DETAILED DESCRIPTION

[0047] In order to make the person skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0048] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0049] As mentioned in the background art, the existing display device is prone to have undesired bright lines and dark lines when displaying, and the inventors have found through careful research that the cause of this technical problem is that:

[0050] Figure 1 FIG. 1 is a structural schematic diagram of an existing display device, Figure 2 FIG. 2 is an experimental diagram of power supply voltage distortion when the gray scale is a gray scale mutation, Figure 3 FIG. 3 is another experimental diagram of power supply voltage distortion when the gray scale is a gray scale mutation, as shown in Figures 1 to 3 The display device includes a hole area WA for placing a pattern acquisition module and the like. When the display device displays a white picture or a picture with a relatively high gray scale, the gray scale in the hole area WA will be fixedly displayed as black in order to optimize the display effect of the rounded corners. At this time, because the data line voltage Data and the power supply voltage (ELVDD) in the display device are coupled, as shown in Figure 2 the horizontal axis represents the row position, and the vertical axis represents the voltage. At this time, the power supply voltage ELVDD corresponding to several rows at the junction is large, resulting in a large driving current when switching from white to black, that is, from 255 gray scale to 0 gray scale at the junction, and thus a "bright line" appears. As shown in Figure 3As shown, when switching from black to white, ELVDD decreases, that is, when switching from grayscale 0 to grayscale 255, the driving current at the junction decreases, and thus "dark lines" appear. When the first display pattern 11 exists in a white screen or a screen with a higher grayscale, that is, when there is only a black rectangular display portion in the row direction, similar to the structure of the hole area WA, bright lines and dark lines will appear. In addition, Figure 4 It is a brightness change diagram of each sub-pixel when the grayscale changes suddenly. Figure 1 and Figure 4 When the second display pattern 12 or the third display pattern 13 exists in a white screen or a screen with a higher grayscale, that is, when there are two or more black rectangular display parts in the row direction, it will not only be affected by the coupling between the data line voltage Data and the power supply voltage ELVDD, but also by the surface crosstalk, resulting in multi-row crosstalk between the two black rectangular display parts. Moreover, the crosstalk of each row and the crosstalk of different color sub-pixels are not consistent, such as Figure 4 As shown, the green sub-pixels in pixel row L1 suddenly change to brighter, while the red and blue sub-pixels in pixel row L1 suddenly change to darker, resulting in more complex color cast problems (such as greenish or pinkish) in the display device.

[0051] In view of the above technical problems, the present invention proposes the following solutions:

[0052] Figure 5 A flowchart of a display method for a display device provided by an embodiment of the present invention, referring to Figure 5 The display device provided by the embodiment of the present invention includes sub-pixels of multiple color types, each sub-pixel of which emits a different color, and typically includes three types of sub-pixels: red sub-pixels, green sub-pixels, and blue sub-pixels. The display method of the display device includes:

[0053] Step S101, obtaining the number of segments of the first type of display grayscale in the pixel row to be compensated, the number of consecutive columns of each segment, and the column position of each segment;

[0054] Specifically, please refer to Figure 4 , the first type of display grayscale is, for example, grayscale 0 or grayscale close to grayscale 0, and the pixel behavior to be compensated transitions from the pixel row with only the second type of display grayscale to one or several pixel rows at the junction of both the second type of display grayscale and the first type of display grayscale; the second type of display grayscale is, for example, grayscale 255 or grayscale close to grayscale 255. The grayscale difference between the first type of display grayscale and the second type of display grayscale is greater than a first preset value, and the first preset value can be determined according to actual conditions, and is not specifically limited in this embodiment. For example, the first preset value can be 200 grayscales, etc. For example Figure 4In the embodiment, the pixel row L-1 only has the second type display gray scale, the pixel row L0, the pixel row L1 and the pixel row L2 have both the first type display gray scale and the second type display gray scale, and the pixel row L0, the pixel row L1 and the pixel row L2 can be the pixel rows to be compensated. The number of segments of the first type display gray scale in the pixel row to be compensated, that is, the number of segments of the first type display gray scale in the pixel row to be compensated, is, for example, Figure 1 As shown in FIG. 1, for the first display pattern 11, the number of segments of the first type display gray scale is 1; for the second display pattern 12, the number of segments of the first type display gray scale is 2; and for the third display pattern 13, the number of segments of the first type display gray scale is 3. The column position of each segment includes the start position and the end position of each segment of the first type display gray scale. The number of segments of the first type display gray scale, the number of continuous columns of each segment and the column position of each segment can be realized by the line buffer function in the driving chip of the display device.

[0055] In step S102, the number of continuous rows of the pixel rows displaying the first type display gray scale according to the number of segments, the number of continuous columns of each segment and the column position of each segment is obtained.

[0056] Specifically, the pixel row located at the boundary between the pixel row only displaying the second type display gray scale and the pixel row having both the first type display gray scale and the second type display gray scale has the voltage crosstalk problem, and the severity of the voltage crosstalk is related to the number of continuous rows of the pixel rows displayed in the display state of the pixel row to be compensated, in other words, related to the height of the second display pattern 12. It should be noted that the number of continuous rows can also be realized by the line buffer function of the driving chip.

[0057] In step S103, the gray scale compensation value of the sub-pixel of the second type display gray scale in the pixel row to be compensated is determined according to the number of segments, the number of continuous rows, the total number of columns of the first type display gray scale in the pixel row to be compensated and the row position of the pixel row to be compensated.

[0058] Specifically, the display device pre-stores the gray scale compensation values corresponding to each number of segments, the number of continuous rows, the total number of columns of the first type display gray scale in the pixel row to be compensated and the row position of the pixel row to be compensated. When the above parameter values are determined, the display device can find the corresponding gray scale compensation value. It should be noted that the display device can determine the gray scale compensation values corresponding to each parameter by actual experimental measurement before leaving the factory.

[0059] In step S104, the gray scale compensation value of the sub-pixel is used to compensate the sub-pixel.

[0060] Specifically, after obtaining the grayscale compensation value corresponding to each sub-pixel, grayscale compensation can be performed on each sub-pixel. Because the display device performs grayscale compensation on each sub-pixel, it can improve the problem of bright and dark lines at the intersection when displaying the first display pattern 11. Because the display device compensates each color sub-pixel separately, it can perform differentiated compensation for different crosstalk issues of different color sub-pixels, thereby also improving multi-row crosstalk and color cast issues that occur when displaying the second display pattern 12 or the third display pattern 13.

[0061] The technical solution of this embodiment adopts a display method for a display device, including: obtaining the number of segments, the number of consecutive columns of each segment, and the column position of each segment in a pixel row to be compensated for a first type of grayscale display; obtaining the number of consecutive rows of pixel rows that display the first type of grayscale display using the segment number, the consecutive number of columns of each segment, and the column position of each segment; determining a grayscale compensation value for a sub-pixel displaying a second type of grayscale display in the pixel row to be compensated based on the segment number, the consecutive number of rows, the total number of columns of the first type of grayscale display in the pixel row to be compensated, and the row position of the pixel row to be compensated; and performing grayscale compensation on the sub-pixel using the grayscale compensation value corresponding to the sub-pixel; wherein the grayscale difference between the first type of grayscale display and the second type of grayscale display is greater than a first preset value. When calculating the grayscale compensation value for each sub-pixel, not only are compensations performed separately for sub-pixels of different colors, but the number of segments of the first type of grayscale display in the pixel row to be compensated is also taken into account, thereby improving voltage crosstalk at the junction of displayed graphics and improving problems such as bright and dark lines or color cast at the junction.

[0062] In the above embodiment, the first type of display grayscale may be grayscale 0, and the second type of display grayscale may be grayscale 255. In some other embodiments, the first type of display grayscale is a display grayscale whose grayscale difference with the first display grayscale is less than a second preset value; the second type of display grayscale is a display grayscale whose grayscale difference with the second display grayscale is less than a third preset value. The first display grayscale may be grayscale 0, and the second preset value may be set according to specific needs, such as the second preset value may be grayscale 10. The second display grayscale may be grayscale 255, and the third preset value may be set according to specific needs, such as the third preset value may be grayscale 10. It should be noted that the above preset values ​​are all absolute values. In this embodiment, the range of compensation of the display device can be expanded by setting the first type of display grayscale and the second type of display grayscale to grayscales within a certain grayscale range.

[0063] Optionally, the display device stores a compensation table group corresponding to the pixel row to be compensated at each row position, each compensation table group includes compensation tables corresponding to each number of segments, and the compensation table includes grayscale compensation values ​​corresponding to the total number of columns and grayscale compensation values ​​corresponding to the number of consecutive rows.

[0064] Table 1

[0065] Specifically, Table 1 is a compensation table provided by an embodiment of the present application. As shown in Table 1, the pixel rows to be compensated can be set as six rows, and three rows are set at each boundary. Then six compensation table groups are stored in the display device, and each compensation table group includes a compensation table corresponding to each segment number, for example, a compensation table corresponding to a segment number of 1, a compensation table corresponding to a segment number of 2, and so on. The compensation table includes a same gray scale number a, that is, a gray scale compensation value corresponding to the total column number, and a gray scale compensation value corresponding to a continuous row number b. Of course, it needs to be explained that the gray scale compensation values in the above compensation table are divided into a gray scale compensation value of a red sub-pixel, a gray scale compensation value of a green sub-pixel, and a gray scale compensation value of a blue sub-pixel.

[0066] Based on the above compensation table, the gray scale compensation value of each color sub-pixel of the second type display gray scale in the pixel row to be compensated is determined according to the segment number, the continuous row number, the total column number of the first type display gray scale in the pixel row to be compensated, and the row position of the pixel row to be compensated, which includes:

[0067] The corresponding compensation table is retrieved according to the row position and the segment number. First, the compensation table group is obtained according to the row position, and then the compensation table corresponding to the segment number is obtained from the compensation table group.

[0068] The corresponding gray scale compensation value is obtained according to the total column number. For example, the total column number is less than 5, the gray scale compensation value is 0, the total column number is between 5 and 30, and the gray scale compensation value is a certain gray scale compensation value. In this embodiment, the interval of the total column number can be divided into multiple gears, for example, divided into 7 gears.

[0069] The corresponding gray scale compensation value is obtained according to the continuous row number. For example, the continuous row number is less than 5, the gray scale compensation value is 0, the continuous row number is between 5 and 30, and the gray scale compensation value is a certain gray scale compensation value. In this embodiment, the interval of the continuous row number can also be divided into multiple gears, for example, divided into 7 gears.

[0070] The sum of the gray scale compensation value corresponding to the total column number and the gray scale compensation value corresponding to the continuous row number is taken as the gray scale compensation value of the corresponding sub-pixel of the second type display gray scale in the pixel row to be compensated.

[0071] Specifically, by looking up the table, the position of the total number of columns and the position of the continuous number of rows are found, and then the grayscale compensation values ​​obtained under the two positions are superimposed to obtain the grayscale compensation value of the corresponding sub-pixel. The grayscale compensation value is a grayscale voltage value and can be 12 bits. For example, if VCSP = 2V and VGMP = 7.9V in the display device, the minimum grayscale compensation voltage value is (7.9V-2V) / 4096≈1.44mV. If the total number of columns is 100, it is in the third position, there are 100 continuous rows, and the compensation value is set to 50, then the compensation voltage value is (7.9-2) / 4095*50*2=14.4mV.

[0072] Preferably, the compensation table group includes a first compensation table and a second compensation table; calling the corresponding compensation table according to the row position and the number of segments includes: if the number of segments is one, calling the first compensation table; if the number of segments is greater than or equal to two, calling the second compensation table.

[0073] Specifically, when the number of segments is one, there is only crosstalk between the data line voltage and the power line voltage at the junction. When the number of segments is greater than or equal to two, not only does crosstalk exist between the data line voltage and the power line voltage at the junction, but it is also affected by surface crosstalk. That is, the effects when the number of segments is one and when the number of segments is greater than or equal to two are inconsistent, and when the number of segments is greater than or equal to two, regardless of the specific number of segments, the type of crosstalk situation. Therefore, the compensation table can be divided into two categories, namely the first compensation table and the second compensation table. The driver chip is used to determine the number of segments. When the number of segments is one, the first compensation table is called, and when the number of segments is greater than or equal to two, the second compensation table is called. In this embodiment, the display device stores fewer compensation tables, which can save storage space and reduce the amount of calculation of the driver chip.

[0074] Optionally, the compensation table further includes polarities of grayscale compensation values ​​corresponding to the total number of columns and polarities of grayscale compensation values ​​corresponding to the number of consecutive rows.

[0075] Specifically, by Figure 4 Analysis shows that in some pixel rows, such as pixel row L1, the polarity of the grayscale deviation of the green sub-pixel from the normal value is positive, while the polarity of the deviation of the blue and red sub-pixels from the normal value is negative. In other words, the three sub-pixels have different color deviations, and therefore the polarity of the grayscale compensation values ​​required to compensate to the normal value is also different. This embodiment assigns a polarity to each grayscale compensation value, allowing differentiated compensation for each sub-pixel, so that each sub-pixel can be compensated to the normal value.

[0076] Optionally, the polarities of the grayscale compensation values ​​corresponding to the total number of columns in the first compensation table are the same, and the polarities of the grayscale compensation values ​​corresponding to the consecutive number of rows in the first compensation table are the same.

[0077] Specifically, for the first display pattern, since only the data line voltage at the junction has the crosstalk problem with the power supply voltage, the individual color sub-pixels deviate in the same direction from the normal value, and thus the polarity of the compensation value is also the same. The polarity of each gray machine compensation value in the first compensation table is set to be the same, and the driving chip no longer needs to consider the polarity of each gray scale compensation value when obtaining the total gray scale compensation value, and thus the operation speed can be greatly improved.

[0078] Optionally, before the gray scale compensation of the sub-pixel by using the gray scale compensation value corresponding to the sub-pixel, the method further comprises:

[0079] determining a first compensation coefficient of the gray scale compensation value of the sub-pixel according to the maximum display brightness DBV of the display device; and updating the gray scale compensation value of the sub-pixel by using the first compensation coefficient.

[0080] Specifically, the typical value of the maximum display brightness of the display device can be any value between 3 nits and 600 nits. When the maximum display brightness of the display device is different, the gray scale compensation value corresponding to the same sub-pixel is also different, and thus the driving chip can also be provided with a first compensation coefficient corresponding to each maximum display brightness. The product of the first compensation coefficient and the original gray scale compensation value of the sub-pixel is taken as a new gray scale compensation value, and thus the sub-pixel is better compensated in gray scale.

[0081] And / or, determining a second compensation coefficient of the gray scale compensation value of the sub-pixel according to the refresh frame rate of the display device; and updating the gray scale compensation value of the sub-pixel by using the second compensation coefficient.

[0082] Specifically, the refresh frame rate of the display device can be 60 Hz, 90 Hz, or 120 Hz, etc. When the refresh frame rate of the display device is different, the gray scale compensation value corresponding to the same sub-pixel is also different, and thus the driving chip can also be provided with a first compensation coefficient corresponding to each maximum display brightness. The product of the first compensation coefficient and the original gray scale compensation value of the sub-pixel is taken as a new gray scale compensation value, and thus the sub-pixel is better compensated in gray scale.

[0083] The embodiment of the present application also provides a display device, as shown in Figure 6 , Figure 6 is another structure schematic view of a display device provided by the embodiment of the present application. The display device comprises sub-pixels of multiple color types, the light-emitting colors of the sub-pixels of different color types are different, and the display device further comprises:

[0084] The first obtaining module 310 is configured to obtain the number of segments of the first type display gray scale in the pixel row to be compensated, the number of continuous columns of each segment, and the column position of each segment; the second obtaining module 320 is configured to obtain the number of continuous rows of the pixel row displaying the first type display gray scale with the number of segments, the number of continuous columns of each segment, and the column position of each segment; the calculating module 330 is configured to determine the gray scale compensation value of the sub-pixel of the second type display gray scale in the pixel row to be compensated according to the number of segments, the number of continuous rows, the total number of columns of the first type display gray scale in the pixel row to be compensated, and the row position of the pixel row to be compensated; and the compensating module 340 is configured to compensate the gray scale of the sub-pixel by using the gray scale compensation value corresponding to the sub-pixel; wherein the gray scale difference between the first type display gray scale and the second type display gray scale is greater than a first preset value.

[0085] Specifically, the display device pre-stores the gray scale compensation values corresponding to each number of segments, number of continuous rows, total number of columns of the first type display gray scale in the pixel row to be compensated, and row position of the pixel row to be compensated. When the above parameter values are determined, the display device can find the corresponding gray scale compensation value. It should be noted that the display device can determine the gray scale compensation values corresponding to each of the above parameters by actual experimental measurement before leaving the factory. Specifically, after obtaining the gray scale compensation value corresponding to each sub-pixel, the gray scale of each sub-pixel can be compensated. Since the display device compensates the gray scale of each sub-pixel, the problem of bright lines and dark lines at the junction when displaying the first display pattern 11 can be improved. Since the display device compensates each color sub-pixel respectively, the problem of different crosstalk for different color sub-pixels can be compensated differently, and the problems of multi-line crosstalk and color cast when displaying the second display pattern 12 or the third display pattern 13 can also be improved.

[0086] The display device used in the technical solution of the present embodiment not only compensates different color sub-pixels respectively when calculating the gray scale compensation value of each sub-pixel, but also considers the number of segments of the first type display gray scale in the pixel row to be compensated, thereby improving the voltage crosstalk problem at the junction of the display pattern and improving the problems of bright lines, dark lines, or color cast at the junction.

[0087] Optionally, the display device further comprises a storage module, and the storage module stores compensation table groups corresponding to the pixel row to be compensated at each row position. Each compensation table group includes a compensation table corresponding to each number of segments, and the compensation table includes a gray scale compensation value corresponding to the total number of columns and a gray scale compensation value corresponding to the number of continuous rows. The calculating module is configured to retrieve the corresponding compensation table according to the row position and the number of segments, obtain the corresponding gray scale compensation value according to the total number of columns, obtain the corresponding gray scale compensation value according to the number of continuous rows, and take the sum of the gray scale compensation value corresponding to the total number of columns and the compensation value corresponding to the number of continuous rows as the gray scale compensation value of each color sub-pixel of the second type display gray scale in the pixel row to be compensated.

[0088] Specifically, by means of the look-up table, the total column number is found in the gear, and the number of consecutive rows is found in the gear, and then the gray scale compensation values obtained in the two gears are superimposed, that is, the gray scale compensation value of the corresponding sub-pixel is obtained.

[0089] Preferably, the compensation table set includes a first compensation table and a second compensation table; the calculation module is configured to: if the segment number is one, the first compensation table is called; and if the segment number is greater than or equal to two, the second compensation table is called.

[0090] Specifically, when the segment number is one, there is only crosstalk between the data line voltage and the power line voltage at the junction. When the segment number is greater than or equal to two, not only is there crosstalk between the data line voltage and the power line voltage at the junction, but also the face crosstalk is affected. That is, when the segment number is one and the segment number is greater than or equal to two, the influence is inconsistent, and when the segment number is greater than or equal to two, no matter how many the segment number is, the type of crosstalk is the same. Therefore, the compensation table can be divided into two categories, that is, the first compensation table and the second compensation table. The driving chip is used to determine the segment number, when the segment number is one, the first compensation table is called, and when the segment number is greater than or equal to two, the second compensation table is called. In this embodiment, the display device stores a smaller number of compensation tables, which can save storage space and reduce the calculation amount of the driving chip.

[0091] It should be understood that the various forms of flow shown above can be reordered, added, or deleted steps. For example, each step described in the present application can be executed in parallel, in sequence, or in a different order, as long as the desired results of the technical solutions of the present application can be achieved, which is not limited herein.

[0092] The above specific embodiments do not constitute a limitation on the scope of protection of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display method of a display device including subpixels of a plurality of color types, the subpixels of different color types having different emission colors, characterized by, The display method comprises: acquiring the number of segments of a first type display gray scale in a pixel row to be compensated, the number of continuous columns of each segment, and the column position of each segment; acquiring the number of continuous rows of pixel rows displaying the first type display gray scale according to the number of segments, the number of continuous columns of each segment, and the column position of each segment; determining the gray scale compensation value of a sub-pixel of a second type display gray scale in the pixel row to be compensated according to the number of segments, the number of continuous rows, the total number of columns of the first type display gray scale in the pixel row to be compensated, and the row position of the pixel row to be compensated; compensating the gray scale of the sub-pixel by using the gray scale compensation value corresponding to the sub-pixel. The gray scale difference between the first type display gray scale and the second type display gray scale is greater than a first preset value.

2. The display method of a display device according to claim 1, wherein The first type display gray scale is a display gray scale whose gray scale difference with a first display gray scale is less than a second preset value; and the second type display gray scale is a display gray scale whose gray scale difference with a second display gray scale is less than a third preset value.

3. The display method of a display device according to claim 1, wherein The display device stores a compensation table group corresponding to the pixel row to be compensated at each row position, each compensation table group comprises a compensation table corresponding to each number of segments, and the compensation table comprises a gray scale compensation value corresponding to the total number of columns and a gray scale compensation value corresponding to the number of continuous rows. The determination of the gray scale compensation value of the sub-pixel of the second type display gray scale in the pixel row to be compensated according to the number of segments, the number of continuous rows, the total number of columns of the first type display gray scale in the pixel row to be compensated, and the row position of the pixel row to be compensated comprises: fetching a corresponding compensation table according to the row position and the number of segments; acquiring a corresponding gray scale compensation value according to the total number of columns; acquiring a corresponding gray scale compensation value according to the number of continuous rows; taking the sum of the gray scale compensation value corresponding to the total number of columns and the gray scale compensation value corresponding to the number of continuous rows as the gray scale compensation value of the corresponding sub-pixel of the second type display gray scale in the pixel row to be compensated.

4. The display method of a display device according to claim 3, wherein The compensation table group comprises a first compensation table and a second compensation table. Fetching a corresponding compensation table according to the row position and the number of segments comprises: if the number of segments is one, the first compensation table is called; if the number of segments is greater than or equal to two, the second compensation table is called.

5. The display method of a display device according to claim 4, wherein The compensation table further comprises the polarity of the gray scale compensation value corresponding to the total number of columns and the polarity of the gray scale compensation value corresponding to the number of continuous rows.

6. The display method of a display device according to claim 5, wherein The polarities of the gray scale compensation values corresponding to the total number of columns in the first compensation table are the same, and the polarities of the gray scale compensation values corresponding to the number of continuous rows in the first compensation table are the same.

7. The display method of a display device according to claim 1, wherein Before compensating the gray scale of the sub-pixel by using the gray scale compensation value corresponding to the sub-pixel, the method further comprises: determining a first compensation coefficient of the gray scale compensation value of the sub-pixel according to the maximum display brightness of the display device; updating the gray scale compensation value by using the first compensation coefficient; and / or determining a second compensation coefficient of the gray scale compensation value of the sub-pixel according to the refresh frame rate of the display device; updating the gray scale compensation value of the sub-pixel by using the second compensation coefficient.

8. A display device comprising subpixels of a plurality of color types, the subpixels of different color types having different emission colors, characterized in that, The display device further comprises: a first acquisition module configured to acquire the number of segments of a first type display gray scale in a pixel row to be compensated, the number of continuous columns of each segment, and the column position of each segment; The second obtaining module is configured to obtain a continuous row number of pixel rows displaying the first type of display gray scale, the continuous row number being displayed according to the segment number, the continuous column number of each segment, and the column position of each segment; The calculating module is configured to determine a gray scale compensation value of a sub-pixel of the second type of display gray scale in the pixel row to be compensated according to the segment number, the continuous row number, a total column number of the first type of display gray scale in the pixel row to be compensated, and a row position of the pixel row to be compensated. The compensating module is configured to perform gray scale compensation on the sub-pixel by using the gray scale compensation value corresponding to the sub-pixel. The gray scale difference between the first type of display gray scale and the second type of display gray scale is greater than a first preset value.

9. The display device of claim 8, wherein, The display device further comprises a storage module, and the storage module stores a compensation table group corresponding to a pixel row to be compensated at each row position. Each compensation table group comprises a compensation table corresponding to each segment number, and the compensation table comprises a gray scale compensation value corresponding to the total column number and a gray scale compensation value corresponding to the continuous row number. The calculating module is configured to retrieve a corresponding compensation table according to the row position and the segment number, obtain a corresponding gray scale compensation value according to the total column number, obtain a corresponding gray scale compensation value according to the continuous row number, and take the sum of the gray scale compensation value corresponding to the total column number and the gray scale compensation value corresponding to the continuous row number as a gray scale compensation value of each color sub-pixel of the second type of display gray scale in the pixel row to be compensated.

10. The display device according to claim 9, wherein The compensation table group comprises a first compensation table and a second compensation table. The calculating module is configured to call the first compensation table if the segment number is one, and call the second compensation table if the segment number is greater than or equal to two.

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