Display panel, driving method thereof, driving chip and display device

Abstract

The invention discloses a display panel, a driving method thereof, a driving chip and a display device. The driving method comprises the steps of starting a compensation mode; obtaining current frame display data according to the compensation mode; obtaining at least two adjacent frames of display data stored in a display memory according to the current frame of display data; acquiring brightness compensation data according to the current frame display data and the at least two frames of display data; obtaining target display data according to the current frame display data and the brightness compensation data; and displaying the current frame according to the target display data. The smear phenomenon of the display panel is effectively improved, and the display effect of the display panel is ensured.

Description

TECHNICAL FIELD

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

[0002] With the continuous development of display technology, the display panel driven by light-emitting driving current is difficult to reach the required brightness in a short time when switching from a lower brightness display state to a higher brightness display state, resulting in the appearance of ghosting phenomenon, which seriously affects the display effect. SUMMARY

[0003] The present application provides a display panel, a driving method thereof, a driving chip and a display device, which effectively improve the ghosting phenomenon of the display panel and ensure the display effect of the display panel.

[0004] In a first aspect, the present application provides a driving method of a display panel, comprising:

[0005] starting a compensation mode;

[0006] obtaining current frame display data according to the compensation mode;

[0007] obtaining at least two frames of display data stored in a display memory according to the current frame display data;

[0008] obtaining brightness compensation data according to the current frame display data and the at least two frames of display data;

[0009] obtaining target display data according to the current frame display data and the brightness compensation data;

[0010] displaying the current frame according to the target display data.

[0011] In a second aspect, the present application provides a driving chip, comprising the driving method of the display panel in any one of the first aspect.

[0012] In a third aspect, the present application provides a display panel, comprising the driving chip in the second aspect.

[0013] In a fourth aspect, the present application provides a display device, comprising the display panel in the third aspect.

[0014] The technical scheme of the embodiment of the present application provides a driving method of a display panel, and the driving method comprises the following steps: starting a compensation mode; obtaining current frame display data according to the compensation mode; obtaining at least two frames of display data stored in a display memory according to the current frame display data; obtaining brightness compensation data according to the current frame display data and the at least two frames of display data; obtaining target display data according to the current frame display data and the brightness compensation data; and displaying the current frame according to the target display data. The at least two frames of display data stored in the display memory are used to perform brightness compensation on the current frame display data, so that the ghosting phenomenon of the display panel is effectively improved, and the display effect of the display panel is ensured.

[0015] It should be understood that the content described in this part is not intended to identify 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

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. 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.

[0017] Figure 1 A low-brightness time front frame brightness change curve provided in the prior art;

[0018] Figure 2 A flowchart of a driving method of a display panel provided in the embodiment of the present application;

[0019] Figure 3 A flowchart of another driving method of a display panel provided in the embodiment of the present application;

[0020] Figure 4 A flowchart of another driving method of a display panel provided in the embodiment of the present application;

[0021] Figure 5 A flowchart of another driving method of a display panel provided in the embodiment of the present application;

[0022] Figure 6 A flowchart of another driving method of a display panel provided in the embodiment of the present application;

[0023] Figure 7 A flowchart of another driving method of a display panel provided in the embodiment of the present application;

[0024] Figure 8A flowchart of another driving method of a display panel provided by an embodiment of the present application is shown in FIG. 6.

[0025] Figure 9 A structural diagram of a driving chip provided by an embodiment of the present application is shown in FIG. 4.

[0026] Figure 10 A structural diagram of a driving chip provided by an embodiment of the present application is shown in FIG. 4.

[0027] Figure 11 A structural diagram of a display device provided by an embodiment of the present application is shown in FIG. 8. DETAILED DESCRIPTION

[0028] In order to make the personnel 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 conjunction 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, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the personnel in the art without creative labor should belong to the protection scope of the present application.

[0029] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be exchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those 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 have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] Figure 1 A low-brightness time front frame brightness change curve provided by the prior art is shown in FIG. 5. Figure 1As shown, the display panel driven by the light-emitting driving current is shown to be driven to display the display brightness change over time after switching from a low brightness display state to a high brightness display state. The display brightness of the fourth frame display picture and the display brightness of the fifth frame display picture are the expected brightness level, and the display brightness of the first frame display picture, the display brightness of the second frame display picture and the display brightness of the third frame display picture all fail to reach the expected brightness level, resulting in the reason that the display brightness of the above-mentioned display panel is low in the first three frames of display picture being that the display brightness of the display panel can be increased with the increase of the intensity of the light-emitting driving current, and since the generation speed of the light-emitting driving current is limited, the intensity of the light-emitting driving current cannot quickly reach the required size after switching to the high brightness display state, resulting in the display brightness of the display panel failing to reach the expected size in a short time, causing the appearance of the trailing phenomenon.

[0031] In the prior art, the display brightness is usually compensated by overdrive compensation to achieve the suppression of the above-mentioned trailing phenomenon, which usually uses the data of the previous frame stored in the memory (SRAM, Static Random-Access Memory) to output compensation data in combination with the current frame data to achieve brightness compensation. However, since the display panel needs to be compensated for display brightness at least for the display picture of the previous frame after switching from a low brightness display state to a high brightness display state, a large enough SRAM needs to be used in the driving chip to meet the storage of multiple frame data, at this time, the size of the driving chip will also increase, and the cost will also increase, otherwise it is difficult to solve the trailing phenomenon.

[0032] To solve the above technical problems, the embodiment of the present application provides a driving method of a display panel, which comprises: starting a compensation mode; obtaining current frame display data according to the compensation mode; obtaining adjacent at least two frame display data stored in a display memory according to the current frame display data; obtaining brightness compensation data according to the current frame display data and the at least two frame display data; obtaining target display data according to the current frame display data and the brightness compensation data; and displaying the current frame according to the target display data. The adjacent at least two frame display data stored in the display memory is used to compensate the brightness of the current frame display data, so as to effectively improve the trailing phenomenon of the display panel and ensure the display effect of the display panel.

[0033] The above is the core idea of the present application, and the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0034] Figure 2A flowchart of a display panel driving method provided by an embodiment of the present application, the embodiment can be applied to the driving of a display panel, and the method can be executed by a driving chip, which can be implemented in the form of hardware and / or software, and can be configured in the display panel. As shown in Figure 2 the method comprises the following steps.

[0035] S101, starting a compensation mode.

[0036] When the display panel is switched from a low-brightness display state to a high-brightness display state, and when the display panel is driven to display a dynamic image, the compensation mode needs to be started at this time to avoid the generation of a trailing phenomenon.

[0037] S102, obtaining current frame display data according to the compensation mode.

[0038] After starting the compensation mode, the current frame display data, i.e., the brightness data of the image to be displayed, needs to be obtained.

[0039] S103, obtaining at least two frames of display data stored in a display memory according to the current frame display data.

[0040] The display memory is a memory in the driving chip that is specially used to store image data, and is usually responsible for buffering frame buffer, texture, rendering data, etc., to affect the display performance and display quality. When the display panel is in a static image display state, the display memory needs to store picture data, and the driving chip realizes the static image display by refreshing the display memory. When the display panel is in a dynamic image display state, the display memory does not need to store picture data, so the space originally used to store picture data is used to store multiple frames of display data, thereby avoiding the increase in the size of the driving chip and the increase in the manufacturing cost. After starting the compensation mode, at least two frames of display data stored in the display memory of the driving chip are extracted according to the current frame display data, i.e., when the current frame is the fourth frame, the display memory stores at least the display data of the third frame and the display data of the second frame. Since the multiple frames of display images are different under the compensation mode, a trailing phenomenon may occur, and thus the brightness of the image to be displayed is compensated according to the display data of the third frame and the display data of the second frame to avoid the trailing phenomenon.

[0041] S104, obtaining brightness compensation data according to the current frame display data and the at least two frames of display data.

[0042] The corresponding relationship between the adjacent previous frame display data, the current frame display data and the brightness compensation data is stored in the driving chip, so that the brightness compensation data of different pixels under the corresponding preset brightness is compensated, the difference between the brightness of different pixels and the corresponding preset brightness is reduced, and the probability of uneven display is reduced. The brightness compensation data of the current frame display data can be correspondingly obtained in combination with the adjacent at least two frame display data. The brightness compensation data includes a plurality of sub-brightness compensation data, and the number of sub-brightness compensation data corresponds to the number of display data in the at least two frame display data. When the adjacent two frame display data are included, the brightness compensation data includes two sub-brightness compensation data. When the adjacent three frame display data are included, the brightness compensation data includes three sub-brightness compensation data, and the like.

[0043] S105, obtaining target display data according to the current frame display data and the brightness compensation data.

[0044] The current frame display data can be superimposed with the corresponding brightness compensation data to correspondingly obtain the target display data, so as to compensate the current frame display data.

[0045] S106, displaying the current frame according to the target display data.

[0046] When the display picture is displayed, the current frame is displayed by using the target display data, and the above-mentioned compensation operation is performed when the dynamic display picture is displayed, so as to avoid the ghosting phenomenon.

[0047] The embodiment of the present application opens the compensation mode, obtains the current frame display data according to the compensation mode, obtains the adjacent at least two frame display data stored in the display memory according to the current frame display data, obtains the brightness compensation data according to the current frame display data and the at least two frame display data, obtains the target display data according to the current frame display data and the brightness compensation data, and displays the current frame according to the target display data. The brightness compensation of the current frame display data is performed by means of the adjacent at least two frame display data stored in the display memory, the size of the driving chip is avoided to be increased, the ghosting phenomenon of the display panel is effectively improved, and the display effect of the display panel is ensured.

[0048] Optionally, Figure 3 Another flowchart of a driving method of a display panel provided by the embodiment of the present application is shown in Figure 3 The method comprises the following steps:

[0049] S201, obtaining display picture instruction information.

[0050] The display picture instruction information can include dynamic picture instruction information and static display picture instruction information, and can correspondingly output the display picture instruction according to the actual display requirement, so as to realize the dynamic picture display or the static picture display.

[0051] S202, when the display picture instruction information is dynamic display picture instruction information, starting the compensation mode.

[0052] When the driving chip receives the dynamic display picture instruction information output by the register, the display panel is switched from the static picture state to the dynamic picture state at this time, and since there is a difference in display brightness between adjacent frames, a trailing phenomenon occurs at this time, and the compensation mode needs to be started to compensate the display brightness of the to-be-displayed picture and eliminate the display unevenness phenomenon.

[0053] S203, when the display picture instruction information is static display picture instruction information, stopping the compensation mode.

[0054] When the driving chip receives the static display picture instruction information output by the register, the display panel is switched from the dynamic picture state to the static picture state at this time, and since the multiple frames of display pictures displayed continuously are the same at this time, the trailing phenomenon is not easy to occur, and therefore the compensation mode can be stopped.

[0055] S204, obtaining current frame display data according to the compensation mode.

[0056] S205, obtaining at least two frames of display data stored in the display memory according to the current frame display data.

[0057] S206, obtaining brightness compensation data according to the current frame display data and the at least two frames of display data.

[0058] S207, obtaining target display data according to the current frame display data and the brightness compensation data.

[0059] S208, displaying the current frame according to the target display data.

[0060] The embodiment of the application obtains display picture instruction information, when the display picture instruction information is dynamic display picture instruction information, starts the compensation mode, when the display picture instruction information is static display picture instruction information, stops the compensation mode, and starts or stops the compensation mode according to the display picture instruction information, so as to weaken the trailing phenomenon and ensure the display uniformity of the display panel.

[0061] Optionally, Figure 4 Another flowchart of a driving method of a display panel provided by the embodiment of the application is shown in FIG. 4, and the method comprises the following steps: Figure 4

[0062] S301, obtaining display picture instruction information.

[0063] S302, when the display picture instruction information is dynamic display picture instruction information, starting the compensation mode.

[0064] ​S303, when the display picture instruction information is static display picture instruction information, stop the compensation mode.

[0065] S304, obtain current frame display data according to the compensation mode.

[0066] S305, perform data block processing according to the current frame display data.

[0067] Since the storage space in the driving chip is limited and the amount of display data is large, a plurality of pixels in the display panel can be processed in data blocks to form a plurality of data blocks, each data block corresponding to a plurality of arrayed pixels, each data block corresponding to a current frame display data and a brightness compensation data. The data of all pixels in the data block can be processed to facilitate subsequent combination of the current frame display data to obtain adjacent at least two frame display data, and then the same brightness compensation data is shared by a plurality of pixels in the same data block. For example, 2*8 pixels share the same brightness compensation data, which can be 16 pixels arrayed along adjacent two rows and adjacent eight columns in the display panel. The same brightness compensation data is used to compensate the 16 pixels respectively, reducing the data storage space. By performing data block processing on a plurality of pixels after obtaining the current frame display data, the same at least two frame display data corresponding to the same data block and the same brightness compensation data corresponding to the same data block are obtained, effectively reducing the number of brightness compensation data and saving storage space.

[0068] S306, obtain adjacent at least two frame display data stored in the display memory according to the current frame display data.

[0069] S307, obtain brightness compensation data according to the current frame display data and the at least two frame display data.

[0070] S308, obtain target display data according to the current frame display data and the brightness compensation data.

[0071] S309, display the current frame according to the target display data.

[0072] The embodiment of the present application acquires display picture instruction information; when the display picture instruction information is dynamic display picture instruction information, the compensation mode is started; when the display picture instruction information is static display picture instruction information, the compensation mode is stopped; the current frame display data is acquired according to the compensation mode; the data block processing is performed according to the current frame display data; the adjacent at least two frame display data stored in the display memory is acquired according to the current frame display data; the brightness compensation data is acquired according to the current frame display data and the at least two frame display data; the target display data is acquired according to the current frame display data and the brightness compensation data; the display of the current frame is performed according to the target display data, the data block processing is performed on the data in the display panel after the current frame display data is acquired, so that the same brightness compensation data is corresponding to the multiple pixels in the same data block, the number of the brightness compensation data is effectively reduced, and the storage space is saved.

[0073] Optionally, the frame number range of the at least two frame display data is 2-5.

[0074] The display memory can store 2 frame display data, 3 frame display data, 4 frame display data and 5 frame display data, generally, the more display data stored, the more accurate the brightness compensation precision of the current frame is, but considering the storage space of the display memory, the number of the display data that can be stored can be selected according to the actual design requirement. For example, when the data amount of the display panel is 1080*2400*3*8bit=60.3Mbit, the data amount is 20.8Mbit after 3 times of compression, if 3.9Mbit is calculated according to one frame display data, at this time, the display memory can store 5 frame display data at most.

[0075] Optionally, the adjacent at least two frame display data includes the N-1 frame display data and the N-2 frame display data, wherein N is a positive integer greater than 2, and the N frame display data is the current frame display data. Figure 5 The flow chart of another driving method of the display panel provided by the embodiment of the present application is shown in Figure 5 The method comprises the following steps:

[0076] S401, acquiring display picture instruction information.

[0077] S402, when the display picture instruction information is dynamic display picture instruction information, starting the compensation mode.

[0078] S403, when the display picture instruction information is static display picture instruction information, stopping the compensation mode.

[0079] S404, acquiring the N frame display data according to the compensation mode.

[0080] S405, performing data block processing according to the current frame display data.

[0081] S406, obtaining the N-1 frame display data and the N-2 frame display data stored in the display memory according to the N frame display data.

[0082] For example, when N is 4, the 4th frame display data is the current frame display data, and the 3rd frame display data and the 2nd frame display data stored in the display memory are obtained.

[0083] S407, obtaining the first sub-luminance compensation data according to the N frame display data and the N-1 frame display data.

[0084] S408, obtaining the second sub-luminance compensation data according to the N frame display data and the N-2 frame display data.

[0085] For example, the first sub-luminance compensation data is obtained according to the 4th frame display data and the 3rd frame display data, and the second sub-luminance compensation data is obtained according to the 4th frame display data and the 2nd frame display data, so that the first and second sub-luminance compensation data corresponding to the two frames adjacent to the current frame display data are obtained, and the current frame display data is compensated to weaken the trailing phenomenon.

[0086] S409, obtaining the luminance compensation data according to the first sub-luminance compensation data and the second sub-luminance compensation data.

[0087] For example, the first sub-luminance compensation data and the second sub-luminance compensation data are superimposed to obtain the luminance compensation data.

[0088] S410, obtaining the target display data according to the current frame display data and the luminance compensation data.

[0089] S411, displaying the Nth frame according to the target display data.

[0090] According to the embodiment of the present application, the N-1 frame display data and the N-2 frame display data are obtained according to the N frame display data, the first sub-luminance compensation data is obtained according to the N frame display data and the N-1 frame display data, the second sub-luminance compensation data is obtained according to the N frame display data and the N-2 frame display data, the luminance compensation data is obtained according to the first sub-luminance compensation data and the second sub-luminance compensation data, the target display data is obtained according to the current frame display data and the luminance compensation data, and the current frame is displayed according to the target display data, so that the N-1 frame display data and the N-2 frame display data are obtained according to the N frame display data, and then the first sub-luminance compensation data and the second sub-luminance compensation data are obtained, the luminance compensation is performed by means of multiple frame display data, the trailing phenomenon is weakened, and the display uniformity of the display panel is ensured.

[0091] Optionally, Figure 6A flowchart of another driving method of a display panel provided by an embodiment of the present application is shown in FIG. 8, which includes the following steps. Figure 6

[0092] S501, obtaining display picture instruction information.

[0093] S502, when the display picture instruction information is dynamic display picture instruction information, starting a compensation mode.

[0094] S503, when the display picture instruction information is static display picture instruction information, stopping the compensation mode.

[0095] S504, obtaining Nth frame display data according to the compensation mode.

[0096] S505, performing data block processing according to the Nth frame display data.

[0097] S506, obtaining (N-1)th frame display data and (N-2)th frame display data stored in a display memory according to the Nth frame display data.

[0098] S507, obtaining a first lookup table, the first lookup table including first sub-luminance compensation data corresponding to the (N-1)th frame display data and the Nth frame display data.

[0099] The first lookup table is stored in a driving chip, and can be called after starting the compensation mode, so as to obtain the first sub-luminance compensation data in time, which is a preset compensation value. The first lookup table includes the (N-1)th frame display data, the Nth frame display data, and the first sub-luminance compensation data corresponding to the (N-1)th frame display data and the Nth frame display data. Each (N-1)th frame display data and each Nth frame display data corresponds to one first sub-luminance compensation data.

[0100] S508, obtaining a second lookup table, the second lookup table including second sub-luminance compensation data corresponding to the (N-2)th frame display data and the Nth frame display data.

[0101] The second lookup table is stored in the driving chip, and can be called after starting the compensation mode, so as to obtain the second sub-luminance compensation data in time, which is a preset compensation value. The second lookup table includes the (N-2)th frame display data, the Nth frame display data, and the second sub-luminance compensation data corresponding to the (N-2)th frame display data and the Nth frame display data. Each (N-2)th frame display data and each Nth frame display data corresponds to one second sub-luminance compensation data.

[0102] S509, searching for the first sub-luminance compensation data corresponding to the Nth frame display data and the (N-1)th frame display data from the first lookup table.

[0103] ​Wherein, the Nth frame display data can be understood as the horizontal coordinate, the (N-1)th frame display data can be understood as the vertical coordinate, and the first sub-luminance compensation data can be understood as the coordinate point, so as to find the corresponding first sub-luminance compensation data in the first lookup table according to the Nth frame display data and the (N-1)th frame display data.

[0104] S510, find the second sub-luminance compensation data corresponding to the Nth frame display data and the (N-2)th frame display data from the second lookup table.

[0105] Wherein, the Nth frame display data can be understood as the horizontal coordinate, the (N-2)th frame display data can be understood as the vertical coordinate, and the second sub-luminance compensation data can be understood as the coordinate point, so as to find the corresponding second sub-luminance compensation data in the second lookup table according to the Nth frame display data and the (N-2)th frame display data.

[0106] S511, obtain the luminance compensation data according to the first sub-luminance compensation data and the second sub-luminance compensation data.

[0107] S512, obtain the target display data according to the current frame display data and the luminance compensation data.

[0108] S513, display the Nth frame according to the target display data.

[0109] The embodiment of the present application obtains the first lookup table, the first lookup table includes the first sub-luminance compensation data corresponding to the (N-1)th frame display data and the Nth frame display data, obtains the second lookup table, the second lookup table includes the second sub-luminance compensation data corresponding to the (N-2)th frame display data and the Nth frame display data, finds the first sub-luminance compensation data corresponding to the Nth frame display data and the (N-1)th frame display data from the first lookup table, finds the second sub-luminance compensation data corresponding to the Nth frame display data and the (N-2)th frame display data from the second lookup table, and the first lookup table related to the Nth frame display data and the (N-1)th frame display data and the second lookup table related to the Nth frame display data and the (N-2)th frame display data are set in the driving chip in advance, so as to obtain the first sub-luminance compensation data and the second sub-luminance compensation data according to the first lookup table, find the corresponding second sub-luminance compensation data, improve the calculation accuracy of the luminance compensation data, and effectively improve the display trailing phenomenon.

[0110] Optionally, the display panel comprises a plurality of pixel units, and each pixel unit comprises at least first and second sub-pixels with different colors; the first sub-luminance compensation data comprises first and second sub-luminance compensation sub-data, and the second sub-luminance compensation data comprises third and fourth sub-luminance compensation sub-data; the luminance compensation data comprises the first and second sub-luminance compensation data; the target display data comprises first and second target display data; in addition, the display panel can further comprise third sub-pixels, and the current frame of the third sub-pixels can be compensated in the same manner as the first and second sub-pixels, which will not be described in detail herein. Figure 7 Another flowchart of a driving method of a display panel according to an embodiment of the present application is shown in FIG. 6. Figure 7 The method comprises the following steps.

[0111] S601, obtaining display picture instruction information.

[0112] S602, when the display picture instruction information is dynamic display picture instruction information, starting a compensation mode.

[0113] S603, when the display picture instruction information is static display picture instruction information, stopping the compensation mode.

[0114] S604, obtaining the Nth frame display data of the first sub-pixels and the Nth frame display data of the second sub-pixels according to the compensation mode.

[0115] For a color display panel comprising at least first and second sub-pixels with different colors, in order to ensure the display uniformity of the display panel, the first and second sub-pixels with different colors need to be compensated in luminance respectively.

[0116] S605, performing data block processing according to the Nth frame display data of the first sub-pixels and the Nth frame display data of the second sub-pixels.

[0117] S606, obtaining the N-1th and N-2th frame display data of the first sub-pixels stored in the display memory according to the Nth frame display data of the first sub-pixels.

[0118] S607, obtaining the N-1th and N-2th frame display data of the second sub-pixels stored in the display memory according to the Nth frame display data of the second sub-pixels.

[0119] According to the Nth frame display data of the first sub-pixel, the -1th frame display data and the N-2th frame display data adjacent to the Nth frame display data are obtained, and according to the Nth frame display data of the second sub-pixel, the -1th frame display data and the N-2th frame display data adjacent to the Nth frame display data are obtained. For example, when N is 4, the 4th frame display data includes the current frame display data of the first sub-pixel and the current frame display data of the second sub-pixel, and at this time, the 3th frame display data of the first sub-pixel, the 2th frame display data of the first sub-pixel, the 3th frame display data of the second sub-pixel, and the 2th frame display data of the second sub-pixel stored in the display memory are obtained.

[0120] S608, obtaining the first luminance compensation sub-data according to the Nth frame display data and the N-1th frame display data of the first sub-pixel.

[0121] S609, obtaining the second luminance compensation sub-data according to the Nth frame display data and the N-1th frame display data of the second sub-pixel.

[0122] According to the 4th frame display data and the 3th frame display data of the first sub-pixel, the first luminance compensation sub-data is obtained, and according to the 4th frame display data and the 3th frame display data of the second sub-pixel, the second luminance compensation sub-data is obtained, so that the current frame display data of the first sub-pixel and the adjacent previous frame display data are obtained to obtain the first luminance compensation sub-data, and the current frame display data of the second sub-pixel and the adjacent previous frame display data are obtained to obtain the second luminance compensation sub-data, so that the current frame display data of the first sub-pixel and the second sub-pixel is compensated to weaken the ghosting phenomenon.

[0123] S610, obtaining the third luminance compensation sub-data according to the Nth frame display data and the N-2th frame display data of the first sub-pixel.

[0124] S611, obtaining the fourth luminance compensation sub-data according to the Nth frame display data and the N-2th frame display data of the second sub-pixel.

[0125] According to the 4th frame display data and the 2th frame display data of the first sub-pixel, the third luminance compensation sub-data is obtained, and according to the 4th frame display data and the 2th frame display data of the second sub-pixel, the fourth luminance compensation sub-data is obtained, so that the current frame display data of the first sub-pixel and the adjacent previous frame display data are obtained to obtain the third luminance compensation sub-data, and the current frame display data of the second sub-pixel and the adjacent previous frame display data are obtained to obtain the fourth luminance compensation sub-data, so that the current frame display data of the first sub-pixel and the second sub-pixel is compensated to weaken the ghosting phenomenon.

[0126] S612, obtaining the first luminance compensation data of the first sub-pixel according to the first luminance compensation sub-data and the third luminance compensation sub-data.

[0127] The first luminance compensation data is obtained by superimposing the first luminance compensation sub-data and the third luminance compensation sub-data for the first sub-pixel.

[0128] S613, obtaining the second luminance compensation data of the second sub-pixel according to the second luminance compensation sub-data and the fourth luminance compensation sub-data.

[0129] The second luminance compensation data is obtained by superimposing the second luminance compensation sub-data and the fourth luminance compensation sub-data for the second sub-pixel.

[0130] S614, obtaining the first target display data according to the Nth frame display data of the first sub-pixel and the first luminance compensation data, and obtaining the second target display data according to the Nth frame display data of the second sub-pixel and the second luminance compensation data.

[0131] The Nth frame display data of the first sub-pixel and the corresponding first luminance compensation data can be superimposed to correspondingly obtain the first target display data, and the Nth frame display data of the second sub-pixel and the corresponding second luminance compensation data can be superimposed to correspondingly obtain the second target display data, so as to compensate the current frame display data.

[0132] S615, displaying the Nth frame of the first sub-pixel according to the first target display data, and displaying the Nth frame of the second sub-pixel according to the second target display data.

[0133] This embodiment of the invention obtains the (N-1)th and (N-2)th frame display data of the first sub-pixel stored in the display memory based on the Nth frame display data of the first sub-pixel; obtains the (N-1)th and (N-2)th frame display data of the second sub-pixel stored in the display memory based on the current frame display data of the second sub-pixel; obtains first brightness compensation sub-data based on the Nth and (N-1)th frame display data of the first sub-pixel; obtains second brightness compensation sub-data based on the Nth and (N-1)th frame display data of the second sub-pixel; obtains third brightness compensation sub-data based on the Nth and (N-2)th frame display data of the first sub-pixel; and obtains the Nth and (N-1)th frame display data of the second sub-pixel based on the current frame display data of the second sub-pixel. The system obtains fourth brightness compensation sub-data based on frame display data and the (N-2)th frame display number; obtains first brightness compensation data for the first sub-pixel based on first and third brightness compensation sub-data; obtains second brightness compensation data for the second sub-pixel based on second and fourth brightness compensation sub-data; obtains first target display data based on the Nth frame display data and first brightness compensation data of the first sub-pixel; and obtains second target display data based on the Nth frame display data and second brightness compensation data of the second sub-pixel. This allows for corresponding compensation for the current frame of the first sub-pixel and the current frame of the second sub-pixel, effectively improving the ghosting phenomenon of the display panel and ensuring the display effect of the display panel.

[0134] Optionally, the first lookup table includes a first sub-lookup table and a second sub-lookup table, and the second lookup table includes a third sub-lookup table and a fourth sub-lookup table; the first sub-lookup table includes first brightness compensation sub-data corresponding to the display data of the first sub-pixel in frame N-1 and frame N; the third sub-lookup table includes second brightness compensation sub-data corresponding to the display data of the first sub-pixel in frame N-2 and frame N; the second sub-lookup table includes third brightness compensation sub-data corresponding to the display data of the second sub-pixel in frame N-1 and frame N; and the fourth sub-lookup table includes fourth brightness compensation sub-data corresponding to the display data of the second sub-pixel in frame N-2 and frame N. Figure 8 A flowchart of another display panel driving method provided in an embodiment of the present invention is shown below. Figure 8 As shown, the method includes:

[0135] S701, obtain display screen command information.

[0136] S702, when the display screen command information is dynamic display screen command information, enable compensation mode.

[0137] S703, when the display screen command information is static display screen command information, stop the compensation mode.

[0138] S704, acquiring a first sub lookup table, a second sub lookup table, a third sub lookup table and a fourth sub lookup table.

[0139] The first sub lookup table, the second sub lookup table, the third sub lookup table and the fourth sub lookup table are stored in the driving chip, the first sub lookup table includes N-1 frame display data, N frame display data of each first sub pixel and first brightness compensation sub data corresponding to the N-1 frame display data and the N frame display data, and the N-1 frame display data and the N frame display data of each first sub pixel correspond to the first brightness compensation sub data of one first sub pixel.

[0140] The second sub lookup table includes N-1 frame display data, N frame display data of each second sub pixel and second brightness compensation sub data corresponding to the N-1 frame display data and the N frame display data, and the N-1 frame display data and the N frame display data of each second sub pixel correspond to the second brightness compensation sub data of one second sub pixel.

[0141] The third sub lookup table includes N-2 frame display data, N frame display data of each first sub pixel and third brightness compensation sub data corresponding to the N-1 frame display data and the N frame display data, and the N-2 frame display data and the N frame display data of each first sub pixel correspond to the third brightness compensation sub data of one first sub pixel.

[0142] The fourth sub lookup table includes N-2 frame display data, N frame display data of each second sub pixel and fourth brightness compensation sub data corresponding to the N-1 frame display data and the N frame display data, and the N-2 frame display data and the N frame display data of each second sub pixel correspond to the fourth brightness compensation sub data of one second sub pixel.

[0143] S705, acquiring N frame display data of the first sub pixel and N frame display data of the second sub pixel according to the compensation mode.

[0144] S706, performing data block processing according to the N frame display data of the first sub pixel and the N frame display data of the second sub pixel.

[0145] S707, obtaining the N-1th frame display data and the N-2th frame display data of the first sub-pixel stored in the display memory according to the Nth frame display data of the first sub-pixel.

[0146] S708, obtaining the N-1th frame display data and the N-2th frame display data of the second sub-pixel stored in the display memory according to the Nth frame display data of the second sub-pixel.

[0147] S709, searching the first luminance compensation sub-data corresponding to the Nth frame display data and the N-1th frame display data of the first sub-pixel from the first sub lookup table.

[0148] It can be understood that the Nth frame display data is the horizontal coordinate, the N-1th frame display data is the vertical coordinate, and the first luminance compensation sub-data is the coordinate point, so as to search the corresponding first luminance compensation sub-data in the first sub lookup table according to the Nth frame display data and the N-1th frame display data of the first sub-pixel. Table 1 is the first sub lookup table, as shown in Table 1, P1-P7 are the display data input values of the first sub-pixel in the Nth frame, S1-S7 are the display data input values of the first sub-pixel in the N-1th frame, R1-R36 are the first luminance compensation sub-data values of the first sub-pixel in the Nth frame, and Fix1-Fix3 are fixed values. Table 1 only exemplarily shows the display data input values of the first sub-pixel in the Nth frame and the display data input values in the N-1th frame, and does not limit the actual number, which can be set according to the actual design requirement, and the embodiment of the present application does not make specific limitation.

[0149] Table 1 first sub lookup table

[0150]

[0151]

[0152] S710, searching the second luminance compensation sub-data corresponding to the Nth frame display data and the N-1th frame display data of the second sub-pixel from the second sub lookup table.

[0153] Wherein, the Nth frame display data can be understood as the horizontal coordinate, the (N-1)th frame display data can be understood as the vertical coordinate, and the second luminance compensation sub-data is the coordinate point, so as to find the corresponding second luminance compensation sub-data in the second sub lookup table according to the Nth frame display data and the (N-1)th frame display data of the second sub-pixel. Table 2 is the second sub lookup table, as shown in Table 2, Q1-Q7 are the display data input values of the second sub-pixel in the Nth frame, D1-D7 are the display data input values of the second sub-pixel in the (N-1)th frame, O1-O36 are the first luminance compensation sub-data values of the second sub-pixel in the Nth frame, and Fix4-Fix6 are fixed values. Table 2 only exemplarily shows the display data input values of the second sub-pixel in the Nth frame and the display data input values in the (N-1)th frame, and does not limit the actual quantity, which can be set according to the actual design requirement, and the embodiment of the present application is not limited specifically.

[0154] Table 2 is the second sub lookup table

[0155]

[0156]

[0157] S711, finding the third luminance compensation sub-data corresponding to the Nth frame display data and the (N-2)th frame display data of the first sub-pixel in the third sub lookup table.

[0158] Wherein, the Nth frame display data can be understood as the horizontal coordinate, the (N-2)th frame display data can be understood as the vertical coordinate, and the third luminance compensation sub-data is the coordinate point, so as to find the corresponding third luminance compensation sub-data in the third sub lookup table according to the Nth frame display data and the (N-2)th frame display data of the first sub-pixel. Table 3 is the third sub lookup table, as shown in Table 3, T1-T7 are the display data input values of the first sub-pixel in the Nth frame, M1-M7 are the display data input values of the first sub-pixel in the (N-2)th frame, N1-N36 are the first luminance compensation sub-data values of the first sub-pixel in the Nth frame, and Fix7-Fix9 are fixed values. Table 3 only exemplarily shows the display data input values of the first sub-pixel in the Nth frame and the display data input values in the (N-2)th frame, and does not limit the actual quantity, which can be set according to the actual design requirement, and the embodiment of the present application is not limited specifically.

[0159] Table 3 is the third sub lookup table

[0160]

[0161]

[0162] S712, finding the fourth luminance compensation sub-data corresponding to the Nth frame display data and the (N-2)th frame display data of the second sub-pixel in the fourth sub lookup table.

[0163] In the formula, the Nth frame display data is the horizontal coordinate, the N-2th frame display data is the vertical coordinate, and the fourth luminance compensation sub-data is the coordinate point. The fourth luminance compensation sub-data is obtained by searching the fourth sub-lookup table according to the Nth frame display data and the N-2th frame display data of the second sub-pixel. Table 4 is the second sub-lookup table. As shown in Table 4, V1-V7 are the input values of the display data of the second sub-pixel in the Nth frame, W1-W7 are the input values of the display data of the second sub-pixel in the N-1th frame, Y1-Y36 are the first luminance compensation sub-data values of the second sub-pixel in the Nth frame, and Fix10-Fix12 are fixed values. Table 4 only exemplarily shows the input values of the display data of the second sub-pixel in the Nth frame and the input values of the display data in the N-2th frame, and does not limit the actual number, which can be set according to the actual design requirements, and the embodiments of the present application do not make specific limitations.

[0164] Table 4 fourth sub-lookup table

[0165]

[0166] S713, obtaining the first luminance compensation data of the first sub-pixel according to the first luminance compensation sub-data and the third luminance compensation sub-data.

[0167] S714, obtaining the second luminance compensation data of the second sub-pixel according to the second luminance compensation sub-data and the fourth luminance compensation sub-data.

[0168] S715, obtaining the first target display data according to the Nth frame display data and the first luminance compensation data of the first sub-pixel, and obtaining the second target display data according to the Nth frame display data and the second luminance compensation data of the second sub-pixel.

[0169] S716, displaying the Nth frame of the first sub-pixel according to the first target display data, and displaying the Nth frame of the second sub-pixel according to the second target display data.

[0170] The embodiment of the present application obtains a first sub lookup table, a second sub lookup table, a third sub lookup table and a fourth sub lookup table; finds first luminance compensation sub data corresponding to the first sub pixel in the Nth frame display data and the (N-1)th frame display data from the first sub lookup table; finds second luminance compensation sub data corresponding to the second sub pixel in the Nth frame display data and the (N-1)th frame display data from the second sub lookup table; finds third luminance compensation sub data corresponding to the first sub pixel in the Nth frame display data and the (N-2)th frame display data from the third sub lookup table; finds fourth luminance compensation sub data corresponding to the second sub pixel in the Nth frame display data and the (N-2)th frame display data from the fourth sub lookup table, and the first luminance compensation sub data and the third luminance compensation sub data of the first sub pixel and the second luminance compensation sub data and the fourth luminance compensation sub data of the second sub pixel are obtained through the first sub lookup table, the second sub lookup table, the third sub lookup table and the fourth sub lookup table, so that the current frame of the first sub pixel and the current frame of the second sub pixel are compensated respectively, thereby effectively improving the trailing phenomenon of the display panel and ensuring the display effect of the display panel.

[0171] Based on the same inventive concept, the embodiment of the present application also provides a driving chip, Figure 9 The structural schematic diagram of the driving chip provided by the embodiment of the present application is shown in Figure 9 The driving chip is used for executing the driving method of the display panel in any of the above embodiments, and the driving chip comprises:

[0172] The compensation mode opening module 201 is used for opening the compensation mode.

[0173] The current frame display data obtaining module 202 is used for obtaining the current frame display data according to the compensation mode.

[0174] The adjacent at least two frame display data obtaining module 203 is used for obtaining the adjacent at least two frame display data stored in the display memory according to the current frame display data.

[0175] The luminance compensation data obtaining module 204 is used for obtaining the luminance compensation data according to the current frame display data and the at least two frame display data.

[0176] The target display data obtaining module 205 is used for obtaining the target display data according to the current frame display data and the luminance compensation data.

[0177] The current frame display module 206 is used for performing the display of the current frame according to the target display data.

[0178] The driving chip provided by the embodiment of the present application comprises the technical features of the driving method of the display panel provided by any of the embodiments of the present application, and can achieve the beneficial effects of the driving method of the display panel provided by any of the embodiments of the present application. For the same parts, refer to the description of the driving method of the display panel provided by the embodiment of the present application, which will not be repeated here.

[0179] Based on the same inventive concept, the embodiment of the present application further provides a display panel, Figure 10 The structural schematic diagram of the driving chip provided by the embodiment of the present application is shown in Figure 10 The display panel 100 comprises the driving chip 101 described in the above embodiment. The driving chip 101 is used to execute the driving method of the display panel provided by any of the embodiments of the present application. Therefore, the display panel provided by the embodiment of the present application comprises the technical features of the driving method of the display panel provided by any of the embodiments of the present application, and can achieve the beneficial effects of the driving method of the display panel provided by any of the embodiments of the present application. For the same parts, refer to the description of the driving method of the display panel provided by the embodiment of the present application, which will not be repeated here.

[0180] Based on the same inventive concept, the embodiment of the present application further provides a display device, Figure 11 The structural schematic diagram of the display device provided by the embodiment of the present application is shown in Figure 11 The display device 200 comprises the display panel 100 described in the above embodiment.

[0181] It should be noted that the display device provided by the embodiment has the same or corresponding beneficial effects of the display panel of the above embodiment, which will not be repeated here. The display device 200 provided by the embodiment of the present application can be a mobile phone as shown in Figure 11 It can also be any electronic product with display function, including but not limited to the following categories: television, notebook computer, desktop display, tablet computer, digital camera, smart bracelet, smart glasses, vehicle-mounted display, medical equipment, industrial control equipment, touch interactive terminal, etc. The embodiment of the present application does not make special limitation here.

[0182] The above specific implementation does not constitute a limitation on the protection scope 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 modification, equivalent replacement and improvement within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A driving method for a display panel, characterized in that, The driving method includes: Enable compensation mode; Obtain the current frame display data according to the compensation mode; Obtain at least two adjacent frames of display data stored in the display memory based on the current frame display data; Brightness compensation data is obtained based on the current frame display data and the display data of at least two frames; Target display data is obtained based on the current frame display data and the brightness compensation data; The current frame is displayed based on the target display data.

2. The driving method for the display panel according to claim 1, characterized in that, Enabling compensation mode includes: Obtain the command information for displaying the screen; When the display screen instruction information is a dynamic display screen instruction information, the compensation mode is activated.

3. The driving method for the display panel according to claim 2, characterized in that, Also includes: When the display screen instruction information is a static display screen instruction information, the compensation mode is stopped.

4. The driving method for a display panel according to claim 1, characterized in that, Before retrieving display data from at least two adjacent frames stored in the display memory based on the current frame display data, the process also includes: Data block processing is performed based on the data displayed in the current frame.

5. The driving method for a display panel according to claim 1, characterized in that, The number of frames displaying at least two data frames ranges from 2 to 5.

6. The driving method for a display panel according to claim 1, characterized in that, The display data of at least two adjacent frames includes the display data of the (N-1)th frame and the display data of the (N-2)th frame, where N is a positive integer greater than 2, and the display data of the Nth frame is the display data of the current frame; Retrieve display data from at least two adjacent frames stored in the display memory based on the current frame display data, including: The display data of the (N-1)th frame and the display data of the (N-2)th frame stored in the display memory are obtained based on the display data of the Nth frame. Brightness compensation data is obtained based on the current frame display data and the display data of at least two frames, including: The first sub-brightness compensation data is obtained based on the Nth frame display data and the (N-1)th frame display data; The second sub-brightness compensation data is obtained based on the Nth frame display data and the (N-2)th frame display data; Brightness compensation data is obtained based on the first sub-brightness compensation data and the second sub-brightness compensation data.

7. The driving method for a display panel according to claim 6, characterized in that, Before obtaining the first sub-brightness compensation data based on the Nth frame display data and the (N-1)th frame display data, the method further includes: Obtain a first lookup table, which includes the N-1th frame display data and the first sub-brightness compensation data corresponding to the Nth frame display data; Obtain a second lookup table, which includes the N-2th frame display data and the second sub-brightness compensation data corresponding to the Nth frame display data; The first sub-brightness compensation data is obtained based on the Nth frame display data and the (N-1)th frame display data, including: The first sub-brightness compensation data corresponding to the Nth frame display data and the N-1th frame display data is retrieved from the first lookup table. The second sub-brightness compensation data is obtained based on the Nth frame display data and the (N-2)th frame display data, including: The second sub-brightness compensation data corresponding to the Nth frame display data and the N-2th frame display data is retrieved from the second lookup table.

8. The driving method for a display panel according to claim 7, characterized in that, The display panel includes multiple pixel units, each pixel unit including at least a first sub-pixel and a second sub-pixel of different colors; the first sub-brightness compensation data includes first brightness compensation sub-data and second brightness compensation data, and the second sub-brightness compensation data includes third brightness compensation sub-data and fourth brightness compensation data; The brightness compensation data includes first brightness compensation data and second brightness compensation data; The current frame display data is obtained according to the compensation mode, including: The Nth frame display data of the first sub-pixel and the Nth frame display data of the second sub-pixel are obtained according to the compensation mode; Obtaining the display data of the (N-1)th frame and the display data of the (N-2)th frame stored in the display memory based on the display data of the Nth frame includes: The N-1 and N-2 frame display data of the first sub-pixel stored in the display memory are obtained based on the N-th frame display data of the first sub-pixel. The display data of the second sub-pixel in the (N-1)th frame and the display data of the second sub-pixel in the (N-2)th frame stored in the display memory are obtained according to the current frame display data of the second sub-pixel; The first sub-brightness compensation data is obtained based on the Nth frame display data and the (N-1)th frame display data, including: The first brightness compensation sub-data is obtained based on the Nth frame display data and the (N-1)th frame display data of the first sub-pixel; The second brightness compensation sub-data is obtained based on the Nth frame display data and the (N-1)th frame display data of the second sub-pixel; The second sub-brightness compensation data is obtained based on the Nth frame display data and the (N-2)th frame display data, including: The third brightness compensation sub-data is obtained based on the Nth frame display data and the N-2th frame display count of the first sub-pixel; The fourth brightness compensation sub-data is obtained based on the Nth frame display data and the N-2th frame display count of the second sub-pixel; Brightness compensation data is obtained based on the first sub-brightness compensation data and the second sub-brightness compensation data, including: The first brightness compensation data of the first sub-pixel is obtained based on the first brightness compensation sub-data and the third brightness compensation sub-data; The second brightness compensation data of the second sub-pixel is obtained based on the second brightness compensation sub-data and the fourth brightness compensation sub-data.

9. The driving method for a display panel according to claim 8, characterized in that, The first lookup table includes a first sub-lookup table and a second sub-lookup table, and the second lookup table includes a third sub-lookup table and a fourth sub-lookup table; the first sub-lookup table includes the first brightness compensation sub-data corresponding to the first sub-pixel's display data in the (N-1)th frame and the display data in the Nth frame; the third sub-lookup table includes the second brightness compensation sub-data corresponding to the first sub-pixel's display data in the (N-2)th frame and the display data in the Nth frame; the second sub-lookup table includes the third brightness compensation sub-data corresponding to the second sub-pixel's display data in the (N-1)th frame and the display data in the Nth frame; the fourth sub-lookup table includes the fourth brightness compensation sub-data corresponding to the second sub-pixel's display data in the (N-2)th frame and the display data in the Nth frame. Before obtaining the first brightness compensation sub-data based on the Nth frame display data and the (N-1)th frame display data of the first sub-pixel, the method further includes: Obtain the first sub-lookup table, the second sub-lookup table, the third sub-lookup table, and the fourth sub-lookup table; The first brightness compensation sub-data is obtained based on the Nth frame display data and the (N-1)th frame display data of the first sub-pixel, including: Find the first brightness compensation sub-data corresponding to the first sub-pixel in the Nth frame display data and the N-1th frame display data from the first sub-lookup table; The second brightness compensation sub-data is obtained based on the Nth frame display data and the (N-1)th frame display data of the second sub-pixel, including: Find the second brightness compensation sub-data corresponding to the second sub-pixel in the display data of the Nth frame and the display data of the (N-1)th frame from the second sub-lookup table; The third brightness compensation sub-data is obtained based on the Nth frame display data and the N-2th frame display data of the first sub-pixel, including: The third brightness compensation sub-data corresponding to the first sub-pixel in the Nth frame display data and the N-2th frame display data is retrieved from the third sub-lookup table; The fourth brightness compensation sub-data is obtained based on the Nth frame display data and the N-2th frame display data of the second sub-pixel, including: The fourth brightness compensation sub-data corresponding to the second sub-pixel in the display data of the Nth frame and the display data of the N-2th frame is retrieved from the fourth sub-lookup table.

10. A driver chip, characterized in that, The driving method for the display panel included in any one of claims 1-9.

11. A display panel, characterized in that, Includes the driver chip described in claim 10.

12. A display device, characterized in that, Includes the display panel described in claim 11.

Images