Display device driving method and display device

Abstract

The present application discloses a display device and a driving method thereof, the display device including scanning lines, data lines, and a plurality of LED lamps that are surrounded by and driven by the scanning lines and data lines, the plurality of LED lamps being arranged in multiple rows and columns, with anodes of the LEDs connected to the scanning lines and cathodes of the LEDs connected to the data lines, and the driving method including the steps of: acquiring a corrected display gray scale corresponding to the LEDs of the current row based on the display gray scale of the LED lamps of the previous row, the display gray scale of the LED lamps of the current row, and a display gray scale correction table; acquiring corresponding driving parameters based on the corrected display gray scale corresponding to the LEDs of the current row; and controlling the display of the LEDs of the current row using the driving parameters.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to a Chinese patent application bearing application number 202310231477X and entitled "Driving method for display device and display device" filed with the China Patent Office on February 28, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of displays, and more particularly to a display device and a driving method thereof. [Background technology]

[0003] As the quality of life improves, the requirements for row driving in LED displays are increasing, from row switching using simple P-channel Metal-Oxide-Semiconductor Field-Effect Transistors (PMOSFETs) to more highly integrated and multi-functional row drivers.

[0004] When the data signal controlling the row is low, the voltage on the row line (i.e., the anode voltage of the LED lamp) is pulled up, and the data of the transistor on the column line (which can be understood as the cathode voltage of the LED lamp) is displayed, and different LED lamp brightness can be obtained depending on the low level of the data signal. However, due to the existence of parasitic capacitance, when displaying, the discharge current of the parasitic capacitance does not change, so the ratio of the current flowing through the LED and the ratio of the current entering the data driving chip are different, resulting in color cast. Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present application is to provide a display device and a driving method thereof that solves the problem of color cast caused by parasitic capacitance by correcting the display grayscale of the current row. [Means for solving the problem]

[0006] This application discloses a method for driving a display device, the display device including scan lines, data lines, and a plurality of LED lamps that are surrounded by and driven by the scan lines and data lines, the plurality of LED lamps being arranged in multiple rows and columns, the anodes of the LEDs being connected to the scan lines, and the cathodes of the LEDs being connected to the data lines, the driving method comprising: A step of obtaining a corrected display gray scale corresponding to the LED of the current row based on the display gray scale of the LED lamp of the previous row, the display gray scale of the LED lamp of the current row, and the display gray scale correction table; obtaining corresponding driving parameters according to the corrected display grayscale corresponding to the LED of the current row; and controlling the display of the LEDs of the current row according to the driving parameters.

[0007] The present application further discloses a display device driven by any of the driving methods described above, the display device including scan lines, data lines, and a plurality of LED lamps surrounded by the scan lines and data lines and driven, the LED lamps being arranged in multiple rows and columns, with anodes of the LEDs connected to the scan lines and cathodes of the LEDs connected to the data lines, the display device further including a storage module for storing the display gradation correction table, and a driving parameter generation module for generating corresponding driving parameters based on the corrected display gradation corresponding to the LEDs of a current row to control display of the LED lamps of the display device.

[0008] In the present application, considering that parasitic capacitance occurs after the LEDs in the previous row display, and the generated parasitic capacitance affects the display of the LEDs in the next row, in order to deal with the influence of parasitic capacitance, the display gradation of the LEDs is adjusted, the display gradation of the LED lamps in the previous row and the display gradation of the LED lamps in the current row are obtained, the corrected display gradation corresponding to the LEDs in the current row is obtained from the stored display gradation correction table, and corresponding driving parameters are obtained based on the corrected display gradation corresponding to the LEDs in the current row, and the display of the LEDs in the current row is controlled by the driving parameters, and since the driving parameters obtained from the display gradation correction table include the influence of parasitic capacitance on the screen, the color cast problem when the LEDs display is improved and solved. [Brief explanation of the drawings]

[0009] The included drawings are presented for a better understanding of the embodiments of the present application, constitute a part of the specification, illustrate the embodiments of the present application, and together with the written description, serve to explain the principles of the present application. Of course, the drawings described below are merely some examples of the present application, and those skilled in the art can conceive of other drawings based on these drawings without requiring creative efforts. [Figure 1] 3 is a flowchart of a driving method according to a first embodiment of the present invention. [Figure 2] 1 is a schematic diagram illustrating the configuration of a display device according to a first embodiment of the present invention. [Figure 3] 10 is a flowchart of a display gradation correction table according to a first embodiment of the present invention. [Figure 4] 10 is a flowchart of a driving method according to a second embodiment of the present invention. [Figure 5] FIG. 10 is a schematic diagram illustrating the configuration of a driving parameter generation module according to a second embodiment of the present invention. [Figure 6] 10 is a flowchart of a driving method according to a third embodiment of the present invention. [Figure 7] FIG. 10 is a schematic diagram illustrating the configuration of a display device according to a third embodiment of the present invention. [Figure 8] 10 is a flowchart of a driving method according to a fourth embodiment of the present invention. [Figure 9]FIG. 10 is a waveform diagram of RGB currents according to a fourth embodiment of the present invention. [Figure 10] 10 is a flowchart of a driving method according to a fifth embodiment of the present invention. [Figure 11] FIG. 10 is a schematic diagram of a display device according to a sixth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] It should be understood that the terminology used herein and the specific structural and functional details disclosed are merely for the purpose of describing specific embodiments and are representative, but the present application can be specifically embodied in many alternative forms and should not be construed as being limited solely to the embodiments described herein.

[0011] In this description, the terms "first" and "second" are for descriptive purposes only and should not be understood to indicate relative importance or to imply the number of technical features indicated. Thus, unless otherwise specified, a feature qualified as "first" or "second" can expressly or imply the inclusion of one or more of that feature. "Plurality" means two or more than two. The term "comprises" and all variations thereof imply a non-exclusive inclusion, where one or more other features, integers, steps, operations, elements, components, and / or combinations thereof may be present or added.

[0012] Furthermore, the orientations or positional relationships indicated by terms such as "center," "lateral," "up," "down," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" are based on the drawings and are merely simplified descriptions to facilitate explanation of the present application. They do not explicitly state that the devices or elements described necessarily have a specific orientation or are configured or operated in a specific orientation, and therefore should not be understood as limiting the present application.

[0013] Unless otherwise clearly defined or limited, the terms "attached," "coupled," and "connected" should be understood in a broad sense, and may mean, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected via an intermediate medium, or may communicate between the interiors of two elements. Those skilled in the art will be able to understand the specific meanings of the above terms in this application according to specific circumstances. The present application will now be described in detail with reference to the drawings and selected embodiments.

[0014] As shown in Fig. 1, the first embodiment of the present application discloses a driving method for a display device 100. The display device 100 mainly employs mini-LEDs, and the present application mainly describes how to solve the problem of color cast caused by the parasitic capacitance of mini-LEDs. Specifically, the display device 100 includes scan lines 110, data lines 120, and a plurality of LED lamps 130 that are surrounded and driven by the scan lines 110 and the data lines 120, and the plurality of LED lamps 130 are arranged in multiple rows and columns, with anodes of the LEDs connected to the scan lines 110 and cathodes of the LEDs connected to the data lines 120. The driving method includes: Step S1: acquiring a corrected display gradation corresponding to the LED of the current row based on the display gradation of the LED lamp of the previous row, the display gradation of the LED lamp of the current row, and a display gradation correction table; Step S2: obtaining corresponding driving parameters based on the corrected display grayscale corresponding to the LED of the current row; and step S3 of controlling the display of the LEDs in the current row according to the driving parameters.

[0015] After the LEDs in the previous row finish displaying, the corresponding parasitic capacitance also finishes charging. Due to the existence of the parasitic capacitance, when the current row displays, the discharge current of the parasitic capacitance does not change. Instead, the ratio of the current flowing through the LEDs and the ratio of the current entering the driving parameter generation module 150 (MBI LED-Driver IC, also known as LED data driving chip) differ, resulting in color cast. This phenomenon is particularly serious at low gray levels because the ratio of the current from the parasitic capacitance to the current entering the Driver IC increases, making the phenomenon more obvious. In the present application, the corrected display gray level corresponding to the LEDs in the current row is obtained based on the display gray level of the LED lamps 130 in the previous row, the display gray level of the LED lamps 130 in the current row, and a display gray level correction table. The driving parameters corresponding to the corrected display gray level actually take into account the problem of parasitic capacitance, so that the color cast problem is improved and solved when the LED lamps 130 are driven to display using the driving parameters corresponding to the corrected display gray level.

[0016] Furthermore, I would like to explain the generation of the display gradation correction table. Specifically, as shown in FIG. 2, step S1 is Step S11: calculating a parasitic capacitance corresponding to the LEDs in the previous row from the LED display gradation of the LEDs in the previous row; Step S12: calculating a correction value for the LED display gradation of the current row from the acquired parasitic capacitance of the LED of the previous row and the LED display gradation of the current row; and step S13 of obtaining the corrected display gray scale corresponding to the LEDs of the current row based on the correction value and generating the display gray scale correction table.

[0017] The above step may be understood as a step of generating a display gradation correction table, which calculates a correction value for the LED display gradation of the current row from the parasitic capacitance corresponding to the LED display gradation of the previous row and the display gradation of the current row. Specifically, the display gradation correction table is as shown in Table 1 below. JPEG2026506209000002.jpg60170

[0018] Table 1 above shows the data voltages (64 gray levels, corresponding to 6-bit data) that need to be output in accordance with the gray level of the previous row and the gray level of the current row, where Gray(n) represents the display gray level of the LED in the same column of the previous row, and Gray(m)' is the gray level that the same column of the current row is intended to display. Before the product is mass-produced, the optimum table is adjusted according to the display requirements; as an example, the display gray level of the previous row is Gray2', and the display gray level of the current row (this row) is Gray0. The corrected display gray level of the current row is V02 in the table, and because the display gray level V02 includes the influence of parasitic capacitance on the screen, the color cast problem is solved.

[0019] Generally, in step S1, a corrected display gradation corresponding to the LEDs in the current row is obtained based on the initial display gradation of the LED lamps 130 in the previous row, the initial display gradation of the LED lamps 130 in the current row, and the display gradation correction table, or a corrected display gradation corresponding to the LEDs in the current row is obtained based on the corrected display gradation of the LED lamps 130 in the previous row, the initial display gradation of the LED lamps 130 in the current row, and the display gradation correction table.

[0020] Furthermore, if the total amount of influencing parasitic capacitance is C1, the parasitic capacitance between the data line 120 and ground is C2, the parasitic capacitance between the data line 120 and scan line 110 is C3, and the parasitic capacitance in the LED lamp 130 is C4, then C1=C2+C3+C4. In the present application, all parasitic capacitances are taken into consideration, and by calculating all parasitic capacitances, the color cast problem caused by all parasitic capacitances is avoided, and the corrected display gray scale obtained from the display gray scale correction table thus formed can completely eliminate the influence of parasitic capacitances.

[0021] When the LED lamp 130 stops emitting light, the data line 120 no longer outputs the driving parameters, and accordingly reduces the control end voltage of the driving switch 160 of the scan line 110 to release the parasitic capacitance of the scan line 110. By reducing the control end voltage of the driving switch 160, the driving switch 160 can be opened more widely, and the parasitic capacitance caused by the scan line 110 can be released more quickly. When the LED displays, changing the opening of the driving switch 160 can change the anode end voltage of the LED, which changes the magnitude of the current on the LED and can also change the proportion of the current generated by the parasitic capacitance. That is, a display gray scale correction table can be generated corresponding to the scan line 110 and used together with the display gray scale correction table 1 corresponding to the data line 120 to change the influence of the parasitic capacitance on the data line 120 and the scan line 110.

[0022] As shown in Fig. 4, a second embodiment of the present invention discloses a driving method further limited based on the driving method in the first embodiment. Referring to Figs. 4 and 5, the display device 100 includes an LED current generating circuit 151, and one LED current generating circuit 151 is connected to each data line 120. The LED current generating circuit 151 includes a data register 152, a D / A converter 153, and a control switch 154. The gate terminal of the control switch 154 is connected to the data register 152 via the D / A converter 153, and the source of the control switch 154 is connected to a reference low level. Step S1 Step S141: acquiring corresponding voltage data based on the corrected display gradation corresponding to the LEDs in the previous row; The method includes step S142 of storing the voltage data in a data register, and before the LEDs in the current row display, transmitting the stored voltage data to a D / A converter to generate a corresponding data voltage, and controlling the control switch to be turned on according to the generated data voltage to generate an LED current output.

[0023] Considering that the current is the main factor affecting the display of the LED lamp 130, corresponding voltage data is obtained based on the corrected display grayscale corresponding to the LED of the previous row. Before the LED lamp 130 displays, the data register 152 transmits the stored voltage data to the D / A converter 153 to generate a corresponding data voltage. Before the LED lamp 130 displays, the data register 152 controls the control switch 154 to turn on using the generated data voltage, thereby generating an LED current output. During the on period of one scanning signal, a current signal is output based on the output parameter of the current signal to drive the LED that needs to be turned on, causing the LED lamp 130 to light up. The control switch 154 controls the opening degree according to the voltage value of the control end of the control switch 154, and further controls the magnitude of the LED driving current, thereby adjusting the proportion of the parasitic capacitance discharge current, the current flowing through the LED, and the current entering the driver IC.

[0024] JPEG2026506209000003.jpg77170

[0025] As shown in FIG. 6, a driving method is disclosed as a third embodiment of the present invention, which is also a refinement and improvement based on the driving method of the first embodiment, and the step S1 is as follows: Step S161: calculating a parasitic capacitance in a data line corresponding to the LED in the row before the previous row from the LED display gradation in the row before the previous row; Step S162: calculating a correction value for the LED display gradation of the previous row from the acquired parasitic capacitance of the LEDs in the row before the previous row and the LED display gradation of the previous row, and driving the display of the LEDs in the previous row; Step S163 calculates a correction value for the LED display gradation of the current row from the acquired corrected parasitic capacitance of the LED of the previous row and the LED display gradation of the current row; and step S164 of obtaining the corrected display gradation corresponding to the LEDs of the current row based on the correction value of the LED display gradation of the previous row and the correction value of the LED display gradation of the current row, and generating the display gradation correction table.

[0026] 6 and 7, considering that parasitic capacitance still exists after the LED lamps 130 of each row display, correcting the current row will improve the color cast problem during LED display. The corrected display gradation only takes into account the display gradation of the current row and the display gradation of the previous row. Parasitic capacitance will still exist in the LEDs of the row before that, and the generated parasitic capacitance is likely to affect the LEDs of the current row when they display. Based on this, in this embodiment, the parasitic capacitance of the previous two rows is also taken into account when correcting the display gradation of the current row, so that the parasitic capacitance of the row before that does not affect the display gradation. In particular, when the row before that has a display gradation of 255, the previous row has a display gradation of 0, and the current row has a display gradation of 255, the effect of the correction of the row before that on the current row is greater than the effect of the parasitic capacitance of the previous row on the display of the LEDs of the current row.

[0027] Furthermore, as shown in FIG. 8, a fourth embodiment of the present invention further limits any one of the above-mentioned embodiments, and the LED lamps 130 include a red LED lamp 130, a green LED lamp 130, and a blue LED lamp 130, and step S1: Step S181: calculating a parasitic capacitance in a data line corresponding to the LEDs in the previous row from the LED display gradation in the previous row; Step S182 calculates a correction value for the LED display gradation of the current row from the acquired parasitic capacitance of the LED of the previous row, the LED display gradation of the current row, and the driving threshold voltages corresponding to the red LED lamp, the green LED lamp, and the blue LED lamp of the LED of the current row; and step S183 of obtaining a corrected display gray scale corresponding to the LED of the current row based on the correction value, and generating the display gray scale correction table; Here, one display gradation lookup table is provided for each row of LEDs.

[0028] When the proportion of current flowing through the red LED is small, the red LED lamp 130 is less affected by parasitic capacitance, resulting in a reddish appearance overall. When the proportion of current flowing through the blue LED is small, the blue LED lamp 130 is less affected by parasitic capacitance, resulting in a bluish appearance overall. When the proportion of current flowing through the green LED is small, the green LED lamp 130 is less affected by parasitic capacitance, resulting in a greenish appearance overall. Figure 9 shows the magnitude of the current corresponding to RGB, with the shaded areas representing the proportion of current due to parasitic capacitance in the RGB LEDs. Because the thresholds of the drive switches 160 corresponding to the red, blue, and green LEDs are different, the magnitude of the input drive voltages differs, resulting in variations in the corresponding currents. For this reason, a single display gradation correction table is provided for each display row of the RGB LED lamp 130. This display gradation correction table takes into account the effects of parasitic capacitance as well as variations in the performance of LEDs of different colors.

[0029] As shown in FIG. 10, the fifth embodiment of the present invention is a modification of the first embodiment, in which the display device 100 includes a data driving chip for outputting driving parameters to the data line 120, and step S1: Step S101: dividing the display device into a first display area and a second display area along a data line direction; and step S102 of, when the LED lamps of the previous row and the LED lamps of the current row are located within the first display area, obtaining a corrected display gray scale corresponding to the LEDs of the current row based on the display gray scale of the LED lamps of the previous row, the display gray scale of the LED lamps of the current row, and the first display gray scale correction table; when the LED lamps of the previous row and the LED lamps of the current row are located within the second display area, obtaining a corrected display gray scale corresponding to the LEDs of the current row based on the display gray scale of the LED lamps of the previous row, the display gray scale of the LED lamps of the current row, and the second display gray scale correction table; when the LED lamps of the previous row are located within the first display area and the LED lamps of the current row are located within the second display area, obtaining a corrected display gray scale corresponding to the LEDs of the current row based on the display gray scale of the LED lamps of the previous row, the display gray scale of the LED lamps of the current row, and the second display gray scale correction table; Here, if the number and total number of LED rows in the first display area are the same as the number and total number of LED lamps 130 in the second display area, and the display gradation of the LED lamps 130 in the previous row and the display gradation of the LED lamps 130 in the current row in the first display area are the same as the display gradation of the LED lamps 130 in the previous row and the display gradation of the LED lamps 130 in the current row in the second display area, the corrected display gradation corresponding to the first display gradation correction table and the second display gradation correction table will be different, and if the LED lamps in the previous row are located in the first display area and the LED lamps in the current row are located in the second display area, the corrected display gradation corresponding to the LEDs in the current row is obtained based on the corrected display gradation of the LED lamps in the previous row, the display gradation of the LED lamps in the current row, and the first display gradation correction table.

[0030] Considering the influence of line resistance, the voltage signal or current in the data line will both be lost to a certain extent, so the correction will be different at the end away from the signal output and the end close to the signal output, and different display gradation correction tables will be provided for the first display area and the second display area. Of course, the number of display areas provided on one display device 100 does not have to be limited to two, and can be provided according to the number of scanning lines 110, with one row of scanning line 110 or two rows of scanning lines 110 being considered as one display area, and different display gradation correction tables will be set according to the distance from the display area to the signal output end, thereby more accurately solving the problem of color cast occurring in the LED lamps 130 of each row.

[0031] As shown in FIG. 11 , a sixth embodiment of the present application discloses a display device 100, which is driven by the driving method described in any one of the above embodiments. The display device 100 includes scan lines 110, data lines 120, and a plurality of LED lamps 130 that are surrounded by the scan lines 110 and the data lines 120 and driven, the plurality of LED lamps 130 being arranged in multiple rows and columns, with anodes of the LEDs connected to the scan lines 110 and cathodes of the LEDs connected to the data lines 120. The display device 100 further includes a memory module 140 for storing the display gray scale correction table, and a driving parameter generation module 150 for generating corresponding driving parameters based on the corrected display gray scale corresponding to the LEDs of the current row to control the display of the LED lamps 130 of the display device 100.

[0032] Based on the display gradation of the LED lamps 130 in the previous row, the display gradation of the LED lamps 130 in the current row, and the display gradation correction table, a corrected display gradation corresponding to the LEDs in the current row is obtained, and when the LED lamps 130 are driven to display using the driving parameters corresponding to the corrected display gradation, the driving parameters are actually changed from the driving parameters corresponding to the original display gradation, and parasitic capacitance is taken into consideration, thereby reducing the proportion of the current generated by parasitic capacitance in the current flowing into the input terminal of the driving parameter generation module 150, so that after the LEDs in the previous row emit light, the current generated by parasitic capacitance will not affect the current of the LEDs in the current row, avoiding the problem of color cast.

[0033] It should be noted that the limitations on each step of the present solution do not affect the implementation of the specific solution and are not considered to limit the order of the steps. The steps described above may be performed first, later, or even simultaneously, and as long as the present solution can be implemented, they shall fall within the scope of protection of the present application.

[0034] It should be noted that the inventive concept of the present application can be formed into many embodiments, but due to the limited length of the application documents, it is not possible to list all of them. Therefore, unless there is a contradiction, the embodiments or technical features described above can be arbitrarily combined to form new embodiments, and after the embodiments or technical features are combined, the existing technical effects are enhanced.

[0035] The above is a detailed description of the present application in combination with specific selectable embodiments, and it is not to be construed that the specific implementation of the present application is limited to these descriptions. Any simple inferences or substitutions that a person skilled in the art to which the present application pertains can make without departing from the concept of the present application should be deemed to fall within the scope of protection of the present application.

Claims

1. A method for driving a display device including scanning lines, data lines, and a plurality of LED lamps that are surrounded by and driven by the scanning lines and data lines, the plurality of LED lamps being arranged in multiple rows and columns, anodes of the LEDs being connected to the scanning lines, and cathodes of the LEDs being connected to the data lines, A step of acquiring a corrected display gray scale corresponding to the LED of the current row based on the display gray scale of the LED lamp of the previous row, the display gray scale of the LED lamp of the current row, and the display gray scale correction table; obtaining corresponding driving parameters according to the corrected display grayscale corresponding to the LEDs in the current row; and controlling the display of the LEDs in the current row according to the driving parameters.

2. The step of acquiring the corrected display gradation corresponding to the LED of the current row based on the display gradation of the LED lamp of the previous row, the display gradation of the LED lamp of the current row, and the display gradation correction table, calculating a parasitic capacitance corresponding to the LEDs in the previous row from the LED display gradation in the previous row; calculating a correction value for the LED display gradation of the current row from the acquired parasitic capacitance of the LED of the previous row and the LED display gradation of the current row; and obtaining a corrected display gray scale corresponding to the LEDs of the current row based on the correction value, and generating the display gray scale correction table.

3. The display device includes an LED current generating circuit, and one LED current generating circuit is connected to each data line. The LED current generating circuit includes a data register, a D / A converter, and a control switch. The gate terminal of the control switch is connected to the data register via the D / A converter, the source terminal of the control switch is connected to a reference low level, and the drain terminal of the control switch outputs an LED current. The step of obtaining corresponding driving parameters according to the corrected display gray scale corresponding to the LED of the current row described above includes: obtaining corresponding voltage data based on the corrected display grayscale corresponding to the LEDs in the previous row; 2. The driving method of claim 1, further comprising the steps of: storing voltage data in a data register; the data register transmitting the stored voltage data to a D / A converter to generate a corresponding data voltage before the LEDs of the current row display; and controlling the control switch to be turned on by the generated data voltage to generate an LED current output.

4. The step of acquiring the corrected display gradation corresponding to the LED of the current row based on the display gradation of the LED lamp of the previous row, the display gradation of the LED lamp of the current row, and the display gradation correction table, 2. The driving method according to claim 1, further comprising: a step of obtaining a corrected display gray scale corresponding to the LEDs in the current row based on the initial display gray scale of the LED lamps in the previous row, the initial display gray scale of the LED lamps in the current row, and a display gray scale correction table.

5. The step of acquiring the corrected display gradation corresponding to the LED of the current row based on the display gradation of the LED lamp of the previous row, the display gradation of the LED lamp of the current row, and the display gradation correction table, calculating a parasitic capacitance in a data line corresponding to the LED in the row before the previous row from the LED display gray scale in the row before the previous row; a step of calculating a correction value for the LED display gradation of the previous row from the acquired parasitic capacitance of the LEDs in the row before the previous row and the LED display gradation of the previous row, and driving the display of the LEDs in the previous row; calculating a correction value for the LED display gradation of the current row from the acquired parasitic capacitance of the LED of the previous row after correction and the LED display gradation of the current row; and obtaining a corrected display gradation corresponding to the LEDs of the current row based on the correction value of the LED display gradation of the previous row and the correction value of the LED display gradation of the current row, and generating the display gradation correction table.

6. The LED lamps include red LED lamps, green LED lamps, and blue LED lamps, and the step of acquiring a corrected display gray scale corresponding to the LEDs in the current row based on the display gray scale of the LED lamps in the previous row, the display gray scale of the LED lamps in the current row, and the display gray scale correction table includes: calculating a parasitic capacitance in a data line corresponding to the LEDs in the previous row from the LED display gradation in the previous row; calculating a correction value for the LED display gradation of the current row from the acquired parasitic capacitance of the LEDs of the previous row, the LED display gradation of the current row, and drive threshold voltages corresponding to the red LED lamps, green LED lamps, and blue LED lamps of the LEDs of the current row; obtaining a corrected display gray scale corresponding to the LED of the current row based on the correction value, and generating the display gray scale correction table; 2. The driving method according to claim 1, wherein one display gradation lookup table is provided for each row of LEDs.

7. The display device includes a data driving chip, and the data driving chip outputs driving parameters to the data lines, and the step of obtaining a corrected display gray scale corresponding to the LED of the current row according to the display gray scale of the LED lamp of the previous row, the display gray scale of the LED lamp of the current row, and the display gray scale correction table is performed. Dividing the display device into a first display area and a second display area along a data line direction; when the LED lamps of the previous row and the LED lamps of the current row are located within the first display area, obtaining a corrected display gradation corresponding to the LEDs of the current row based on the display gradation of the LED lamps of the previous row, the display gradation of the LED lamps of the current row, and the first display gradation correction table; when the LED lamps of the previous row and the LED lamps of the current row are located within the second display area, obtaining a corrected display gradation corresponding to the LEDs of the current row based on the display gradation of the LED lamps of the previous row, the display gradation of the LED lamps of the current row, and the second display gradation correction table; when the LED lamps of the previous row are located within the first display area and the LED lamps of the current row are located within the second display area, obtaining a corrected display gradation corresponding to the LEDs of the current row based on the display gradation of the LED lamps of the previous row, the display gradation of the LED lamps of the current row, and the second display gradation correction table; 2. The driving method according to claim 1, wherein, when the display gradation of the LED lamps in the previous row and the display gradation of the LED lamps in the current row in the first display area are the same as the display gradation of the LED lamps in the previous row and the display gradation of the LED lamps in the current row in the second display area, the display gradation after correction corresponding to the first display gradation correction table and the second display gradation correction table are different.

8. 3. The driving method according to claim 2, wherein C1 is a value of the parasitic capacitance in the step of calculating the parasitic capacitance corresponding to the LEDs in the previous row from the LED display gradation in the previous row, C2 is a parasitic capacitance between the data line and ground, C3 is a parasitic capacitance between the data line and scanning line, and C4 is a parasitic capacitance in the LED lamp, and C1=C2+C3+C4 is satisfied.

9. the display gray scale is a display gray scale of a data line, and the driving method includes:

2. The driving method of claim 1, further comprising the step of: when the LED lamp stops emitting light, the data line no longer outputs the driving parameters; and accordingly reducing the control end voltage of the driving switch of the scan line to release the parasitic capacitance in the scan line.

10. Before the step of acquiring the corrected display gradation corresponding to the LED of the current row based on the display gradation of the LED lamp of the previous row, the display gradation of the LED lamp of the current row, and the display gradation correction table, 2. The driving method according to claim 1, further comprising: determining whether the display gradation of the LED lamps in the previous row and the display gradation of the LED lamps in the current row are less than 64 gradations; if so, executing a step of acquiring a corrected display gradation corresponding to the LEDs in the current row based on the display gradation of the LED lamps in the previous row, the display gradation of the LED lamps in the current row, and the display gradation correction table; if the display gradation is greater than or equal to 64 gradations, acquiring corresponding driving parameters based on the display gradation corresponding to the LEDs in the current row, and controlling the display of the LEDs in the current row.

11. The step of calculating the parasitic capacitance corresponding to the LEDs in the previous row from the LED display gradation in the previous row described above includes: calculating a parasitic capacitance on a data line corresponding to an LED in a previous row from the LED display grayscale of the LED in the previous row; The step of calculating a correction value for the LED display gradation of the current row from the parasitic capacitance of the LED of the previous row and the LED display gradation of the current row obtained as described above includes:

3. The driving method according to claim 2, further comprising a step of calculating a correction value for the LED display gradation of the current row from the acquired parasitic capacitance on the data line corresponding to the LED of the previous row and the LED display gradation of the current row.

12. storing the voltage data in a data register, and before the LEDs of the current row display, the data register transmits the stored voltage data to a D / A converter to generate a corresponding data voltage; and controlling the control switch to be turned on according to the generated data voltage to generate an LED current output; 4. The driving method according to claim 3, further comprising the step of controlling a D / A converter to generate a corresponding data voltage based on different voltage data and output it to the control end of the control switch, thereby controlling the opening degree of the control switch and further controlling the magnitude of the driving current of the LED.

13. 6. The driving method according to claim 5, wherein the second preceding row has a display gray level of 255, the preceding row has a display gray level of 0, and the current row has a display gray level of 255.

14. 8. The driving method according to claim 7, wherein the number and total number of rows of the LED lamps in the first display area are the same as the number and total number of rows of the LED lamps in the second display area.

15. 8. The driving method according to claim 7, wherein each of the first display area and the second display area includes only two rows of scanning lines and two rows of LED lamps corresponding to the two rows of scanning lines.

16. a display device comprising: scanning lines; data lines; and a plurality of LED lamps surrounded by the scanning lines and the data lines and driven, the plurality of LED lamps being arranged in multiple rows and columns, with anodes of the LEDs connected to the scanning lines and cathodes of the LEDs connected to the data lines; and a storage module for storing the display gradation correction table; and a drive parameter generation module for generating corresponding drive parameters based on corrected display gradations corresponding to the LEDs of a current row, to control display of the LED lamps of the display device.

17. A step of acquiring a corrected display gray scale corresponding to the LED of the current row based on the display gray scale of the LED lamp of the previous row, the display gray scale of the LED lamp of the current row, and the display gray scale correction table; obtaining corresponding driving parameters according to the corrected display grayscale corresponding to the LEDs in the current row; and controlling the display of the LEDs of the current row according to the driving parameters.

18. The step of acquiring the corrected display gradation corresponding to the LED of the current row based on the display gradation of the LED lamp of the previous row, the display gradation of the LED lamp of the current row, and the display gradation correction table, calculating a parasitic capacitance in a data line corresponding to the LEDs in the previous row from the LED display gradation in the previous row; calculating a correction value for the LED display gradation of the current row from the acquired parasitic capacitance of the LED of the previous row and the LED display gradation of the current row; and obtaining a corrected display gray scale corresponding to the LEDs of the current row based on the correction value, and generating the display gray scale correction table.

19. The step of obtaining a corrected display gray scale corresponding to the LED of the current row according to the display gray scale of the LED lamp of the previous row, the display gray scale of the LED lamp of the current row, and the display gray scale correction table includes: Dividing the display device into a first display area and a second display area along a data line direction; when the LED lamps of the previous row and the LED lamps of the current row are located within the first display area, obtaining a corrected display gradation corresponding to the LEDs of the current row based on the display gradation of the LED lamps of the previous row, the display gradation of the LED lamps of the current row, and the first display gradation correction table; when the LED lamps of the previous row and the LED lamps of the current row are located within the second display area, obtaining a corrected display gradation corresponding to the LEDs of the current row based on the display gradation of the LED lamps of the previous row, the display gradation of the LED lamps of the current row, and the second display gradation correction table; when the LED lamps of the previous row are located within the first display area and the LED lamps of the current row are located within the second display area, obtaining a corrected display gradation corresponding to the LEDs of the current row based on the display gradation of the LED lamps of the previous row, the display gradation of the LED lamps of the current row, and the second display gradation correction table; 18. The display device according to claim 17, wherein the display gradation is a display gradation of a data line, and when the display gradation of the LED lamps of a previous row and the display gradation of the LED lamps of a current row in the first display area are the same as the display gradation of the LED lamps of a previous row and the display gradation of the LED lamps of a current row in the second display area, the display gradation after correction corresponding to the first display gradation correction table and the second display gradation correction table are different.

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