Image processing method, device, storage medium and display device for display panel

Abstract

The present application discloses an image processing method, device, storage medium and display device for a display panel, wherein the image processing method comprises the following steps: receiving target image data; performing screen detection on the target image data, and selecting first image data that meets preset conditions; performing a polarity adjustment process on a signal transmission line of the display panel when the first image data simultaneously meets a first length condition and a first width condition; exiting the polarity adjustment process when the first image data simultaneously meets a second length condition and a second width condition; wherein the preset conditions include: a screen composed of a plurality of minimum detection units in a continuous cycle. The above scheme improves the problem of display abnormality caused by common line voltage jitter due to polarity reversal.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to an image processing method, device, storage medium and display device for a display panel. Background Art

[0002] When the liquid crystal display (Thin Film Transistor Liquid Crystal Display, TFT-LCD) is driven, the driving mode is Line-by-Line (progressive scanning). When the Gn signal is high, the corresponding TFT of the row is turned on, and the data line in the column direction can be written with data signals to increase the charging of the pixel unit. Each pixel unit includes a liquid crystal capacitor Clc and a storage capacitor Cst. The input end of the pixel unit is connected to the output end of the corresponding thin film transistor (Thin Film Transistor, TFT), the control end of the TFT is connected to the scan line responsible for transmitting the switch signal, and the input end of the TFT is connected to the data line responsible for transmitting the data signal. One end of Cst and Clc is the pixel electrode, and the other end is the common line (VCOM). Usually in a liquid crystal display, since the polarity of the voltage signal applied to the liquid crystal capacitor Clc and the storage capacitor Cst must be reversed at a predetermined time to avoid polarization of the liquid crystal material and cause permanent damage, it is necessary to perform polarity reversal driving on the pixel unit on the array substrate. Common polarity reversals include: frame reversal, column reversal, row reversal, and dot reversal. Among them, before the writing of the previous frame is completed and the writing of the next frame begins, if the voltage polarities stored in the pixel units on the entire frame are the same, the voltage polarities are all positive or all negative), it is called frame inversion; if the voltage polarities stored in the pixel units on the same column are the same, and the voltage polarities stored in the pixel units on the left and right adjacent columns are opposite, it is called column inversion; if the voltage polarities stored in the pixel units on the same row are the same, and the voltage polarities stored in the pixel units on the upper and lower adjacent rows are opposite, it is called row inversion; if the voltage polarity stored in each pixel unit is opposite to the voltage polarity stored in the pixel units adjacent to it, it is called point inversion.

[0003] Since the common line is easily disturbed by polarity reversal, voltage jitter is likely to occur compared to the theoretical common line voltage, causing abnormal display on the display panel. Summary of the invention

[0004] The purpose of the present application is to provide an image processing method, device, storage medium and display device for a display panel, which improves the problem of display abnormality caused by common line voltage jitter due to polarity reversal.

[0005] The present application discloses an image processing method for a display panel, comprising the steps of:

[0006] receiving target image data;

[0007] Performing image detection on the target image data, and selecting first image data that meets preset conditions;

[0008] When the first image data satisfies both the first length condition and the first width condition, performing a polarity adjustment process on the signal transmission line of the display panel;

[0009] When the first image data satisfies both the second length condition and the second width condition, the polarity adjustment process is exited;

[0010] The preset condition includes: a picture composed of a plurality of minimum detection units in a continuous and cyclic manner.

[0011] In one embodiment, the step of performing frame detection on the image data and selecting target image data that meets preset conditions includes:

[0012] Comparing the format of the target image data with the format of the preset template data, selecting the first image data that meets the preset conditions, and calculating the first length and the first width of the first image data;

[0013] The first length is the length of the first image data in a first direction, the first width is the length of the first image data in a second direction, and the first direction is perpendicular to the second direction.

[0014] In one embodiment, the first length condition is: the first length is greater than or equal to a first preset length; the first width condition is: the first width is greater than or equal to the first preset width; the second length condition is: the first length is less than or equal to the difference between the first preset length and the first standard value; the second width condition is: the first width is less than or equal to the difference between the first preset width and the second standard value.

[0015] In one embodiment, when the first image data does not satisfy the first length condition or the first width condition, it is determined whether to perform a polarity adjustment process for the signal transmission line of the display panel according to the last detection result;

[0016] or,

[0017] When the first image data does not satisfy the second length adjustment or the second width condition, determining whether to perform a polarity adjustment process for the signal transmission line of the display panel according to the last detection result;

[0018] Among them, when the last detection result is to execute the polarity adjustment process of the signal transmission line of the display panel, the polarity adjustment process of the signal transmission line of the display panel continues to be executed; when the last detection result is to exit the polarity adjustment process, the exit of the polarity adjustment process continues.

[0019] In one embodiment, the step of performing a polarity adjustment process on a signal transmission line of the display device includes:

[0020] Outputting a first control signal, a second control signal and a third control signal;

[0021] The potential of any one of the first control signal, the second control signal and the third control signal is changed so that the abnormal parameter of the target image data after the polarity adjustment process is within a preset specification.

[0022] In one embodiment, after performing the polarity adjustment process on the signal transmission line of the display device, the method further includes:

[0023] Determine whether the abnormal parameters of the target image data after the polarity adjustment process are within the preset specifications. If not, adjust at least one of the first preset length and the first standard value in the second length condition and the first preset width and the second standard value in the second width condition, and perform the polarity adjustment process for the signal transmission line of the display device again.

[0024] In one embodiment, the step of performing frame detection on the image data and selecting target image data that meets preset conditions includes:

[0025] Comparing the format of the target image data with the format of the preset template data, and selecting the first image data that meets the preset conditions;

[0026] calculating a first length and a first width of the first image data, and calculating an area of ​​the first image data;

[0027] Determining whether a ratio of an area of ​​the first image data to an entire detection area is greater than or equal to a first preset ratio;

[0028] If the judgment result is yes, then judging whether the first length and the first width of the first image data satisfy the first length condition and the first width condition respectively;

[0029] If the judgment result is no, then exit the polarity adjustment process;

[0030] Among them, the preset conditions include: a screen consisting of multiple minimum detection units; the first length is the length of the first image data in the first direction, the first width is the length of the first image in the second direction, and the first direction is perpendicular to the second direction.

[0031] The present application also discloses an image processing device for a display panel, comprising: a receiving module, a detection module, a judgment module and an execution module; the receiving module is used to receive target image data; the detection module is used to perform screen detection on the target image data; the judgment module is used to judge whether the first image data satisfies a first length condition, a first width condition, a second length condition and a second width condition; the execution module is used to execute a polarity adjustment process for a signal transmission line of the display panel; wherein, when the first image data satisfies both the first length condition and the first width condition, the polarity adjustment process for the signal transmission line of the display panel is executed; when the first image data satisfies both the second length condition and the second width condition, the polarity adjustment process is exited.

[0032] The present application also discloses a storage medium storing a computer program, wherein the computer program, when executed by a processor, implements any one of the above-mentioned image processing methods for a display panel.

[0033] The present application also discloses a display device, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program in the memory, the image processing method for the display panel described in any one of the above is implemented.

[0034] The present application selects the first image data that meets the preset conditions in the picture detection stage, and compares whether the first image data satisfies the first length condition and the first width condition at the same time or satisfies the second length condition and the second width condition at the same time, so as to perform the polarity adjustment process of the signal transmission line of the display panel when the first length condition and the first width condition are met at the same time; and exit the polarity adjustment process when the second length condition and the second width condition are met at the same time. The present application is different from another scheme of the present application, that is, the scheme of judging the area ratio method, in which the area comparison method can only calculate the area ratio, but cannot distinguish whether the target image data is a horizontal rectangle or a vertical rectangle. For the common voltage, the common voltage jitter caused by the data line produces vertical stripes, while the common voltage jitter caused by other signal lines produces horizontal stripes. For horizontal stripes and vertical stripes, there are differences in the selected polarity adjustment process, and different polarity adjustment schemes are required. Moreover, for the area ratio method, it is necessary to meet the ratio of the area of ​​the repeating unit to 95% or more, which is easy to exclude the situation that meets the execution of the polarity adjustment process. The present application selects the first image data that meets the preset conditions from the target image data, and uses the length and width of the first image data as the screening conditions, so as to distinguish the horizontal stripes from the vertical stripes, prevent the polarity adjustment process from being triggered by mistake, and can more accurately control the execution of the polarity adjustment process, thereby improving crosstalk, greenish, increasing the applicability of the product polarity adjustment process, increasing product quality, and improving product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0036] Figure 1 is a structural schematic diagram of a driving circuit of a display device of the present application;

[0037] Figure 2 yes Figure 1 A schematic diagram of the circuit of a sub-pixel in FIG.

[0038] Figure 3 yes Figure 1 A schematic diagram of a waveform of an output data signal S-out of a driving circuit;

[0039] Figure 4 It is a schematic diagram of the display panel of the present application adopting a dot inversion driving mode for the entire screen;

[0040] Figure 5 This is a schematic diagram of voltage jitter that occurs when the common voltage VCOM is reversed in polarity;

[0041] Figure 6 It is a schematic diagram of the steps of an image processing method for a display panel of the present application;

[0042] Figure 7 is a schematic diagram of the minimum detection unit of the present application;

[0043] Figure 8 It is a schematic diagram of horizontal stripes and vertical stripes in the detection screen of this application;

[0044] Fig. 9 is a schematic diagram of the first image data in the detection screen of the present application;

[0045] Fig.10 is a schematic diagram of the steps of the second display panel image processing method of the present application;

[0046] Fig.11 It is a schematic diagram of the relationship between the DOT_C signal, POL signal, POLC signal and the data line polarity;

[0047] Fig.12 It is a schematic diagram of the steps of the third display panel image processing method of the present application;

[0048] Fig.13 It is a schematic diagram showing an abnormal situation in the detection screen of this application;

[0049] Fig.14 is a schematic diagram of an image processing device for a display panel of the present application;

[0050] Fig.15 is a schematic diagram of a display device of the present application. DETAILED DESCRIPTION

[0051] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative, but the present application can be implemented in many alternative forms and should not be construed as being limited to only the embodiments described herein.

[0052] In the description of the present application, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "multiple" means two or more. In addition, the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. indicating orientation or positional relationships are described based on the orientation or relative positional relationships shown in the accompanying drawings, and are only for the convenience of describing the simplified description of the present application, rather than indicating that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0053] The present application is described in detail below with reference to the accompanying drawings and optional embodiments.

[0054] At present, liquid crystal displays are developing towards higher resolution, higher display quality, and larger size. When TFT-LCD is driven, the driving mode is Line-by-Line (progressive scanning). Figure 1 When the Gn signal is high, the corresponding TFT in the row is turned on, and the data in the column direction can be written into the pixel. The simplified schematic diagram of each sub-pixel can be Figure 2 , T that controls the switch, liquid crystal capacitor Clc, storage capacitor Cst, G line responsible for transmitting the switch signal, and S line responsible for transmitting the data signal. One end of Cst and Clc is the pixel electrode, and the other end is the common electrode (VCOM). Liquid crystal works by relying on different voltages at both ends, which makes the rotation different and the light transmittance different. Figure 3 is a waveform diagram of data S-out, Figure 4 It is one of the polarity inversion modes (dot inversion) corresponding to the entire screen. “±” is the voltage level compared to VCOM, that is, higher than VCOM is “+”, and lower than VCOM is “-”. Figure 5 , the common voltage VCOM is easily disturbed by polarity reversal. Figure 3 , VCOM voltage jitter occurs, resulting in abnormal display.

[0055] The present application mainly provides a display device that can improve the above-mentioned common voltage VCOM from being disturbed by polarity reversal and other abnormalities, and improve the image display quality. It should be understood that the display device can be any device that displays either motion (such as video, dynamic images) or fixed (such as static images) and whether text or images.

[0056] See also Figure 6As shown, the present application discloses an image processing method for a display panel, comprising the steps of:

[0057] S100: receiving target image data;

[0058] S200: performing image detection on the target image data, and selecting first image data that meets a preset condition;

[0059] S300: performing a polarity adjustment process for a signal transmission line of the display panel when the first image data satisfies both a first length condition and a first width condition;

[0060] S400: exiting the polarity adjustment process when the first image data satisfies both the second length condition and the second width condition;

[0061] The preset condition includes: a picture composed of a plurality of minimum detection units in a continuous and cyclic manner.

[0062] The present application selects first image data that meets preset conditions during the image detection stage, and compares whether the first image data satisfies the first length condition and the first width condition at the same time or satisfies the second length condition and the second width condition at the same time, thereby performing a polarity adjustment process on the signal transmission line of the display panel when the first length condition and the first width condition are met at the same time; and exits the polarity adjustment process when the second length condition and the second width condition are met at the same time.

[0063] The present application is different from another scheme of the present application, that is, the scheme of judging the area ratio method. The area comparison method can only calculate the area ratio, but cannot distinguish whether the target image data is a horizontal rectangle or a vertical rectangle. For the common voltage, the common voltage jitter caused by the data line produces vertical stripes, while the common voltage jitter caused by other signal lines produces horizontal stripes. For horizontal stripes and vertical stripes, there are differences in the selected polarity adjustment process, and different polarity adjustment schemes are required. Moreover, for the area ratio method, it is necessary to meet the requirement that the area ratio of the repeating unit reaches 95% or more, and it is easy to exclude the situation that meets the execution polarity adjustment process. However, the present application selects the first image data that meets the preset conditions in the target image data, and uses the length and width of the first image data as the screening conditions, so as to distinguish the horizontal stripes from the vertical stripes, prevent the execution polarity adjustment process from being triggered by mistake, and can more accurately control the execution polarity adjustment process. Thereby improving crosstalk, greenish, increasing the applicability of the product polarity adjustment process, increasing product quality, and improving product competitiveness.

[0064] In step S100, in the signal receiving stage, the timing controller receives the target image data from the front-end chip. The target image data is a data signal used to form a picture. The specific picture is composed of bright, dark, bright, dark, etc. pixel units. For example, one pixel unit is bright and the adjacent pixel unit is dark. The two pixel units can form a repeating unit. For another example, see Figure 7 As shown in the figure, the target image data in the figure is the image data of multiple repeated "H" pictures, the shadow represents darkness, and the blank space is RGB sub-pixels. In the figure, one "H" occupies 8*10 pixel units, and each pixel unit is composed of horizontally arranged RGB sub-pixels. Among them, a group of 8*10 pixel units can be a minimum detection unit, or as shown in the dotted box area, the 4*4 pixel unit with the "H" head can be a minimum detection unit. It can be understood that in this embodiment, the minimum size of the minimum detection unit is composed of 2*2 pixel units.

[0065] The preset conditions include: a picture composed of multiple minimum detection units in a continuous cycle. That is, the first image data is a picture composed of multiple minimum detection units in a continuous cycle, where the cycle refers to multiple identical pixels arranged in sequence. For example, when the minimum detection unit is 8*10 pixels, the display grayscale of each position of two minimum detection units is the same, and there are multiple cyclic minimum detection units in the entire detection picture. Continuous means that the display grayscale of each position of adjacent minimum detection units is the same, and the picture is composed of continuous arrangement. The first image data is a picture composed of multiple minimum detection units in a continuous cycle.

[0066] In step S200, in the stage of detecting the screen, the timing controller automatically performs screen detection on the received target image data. Screen detection on the target image data refers to detecting a part or all of a frame of the screen. In this embodiment, a local detection method is adopted, that is, a part is selected for detection, and the detected area is called a detection area. The first image data is selected by detecting multiple minimum detection units that are continuous in a cycle. The first image data is generally rectangular, and the size information of the minimum detection unit can be selected according to different display panels.

[0067] In steps S300-S400, the length and width of the first image data selected above are detected or calculated to obtain the length and width of the first image data. It can be understood that the first length is the length of the first image data in the first direction, the first width is the length of the first image data in the second direction, and the first direction is perpendicular to the second direction. In this embodiment, the length is not limited to be greater than the width, and the length and width only represent the length of the first image data in the first direction and the second direction. When the length is greater than the width, it is a horizontal rectangle, and when the length is less than the width, it is a vertical rectangle.

[0068] See also Figure 8 As shown, the present application can distinguish between area A and area B in the figure by the length-width comparison method. Area A is a horizontal rectangle, and area B is a vertical rectangle, and a=a', b=b', that is, the area size of area A is the same as that of area B. It can be understood that the stripes caused by the common voltage jitter of the conventional display panel include horizontal stripes and vertical stripes. When horizontal stripes appear, after detection by the present application, the first image data that can be selected is a horizontally arranged rectangle. When vertical stripes appear on the display panel, the first image data detected is a vertically arranged rectangle. Whether it is detected by the grayscale comparison method or the area ratio method mentioned above, it is impossible to accurately distinguish between the two situations.

[0069] The first length condition and the first width condition must be satisfied at the same time, and when satisfied, the polarity adjustment process for the signal transmission line of the display panel is performed. The second length condition and the second width condition must also be satisfied at the same time, and when satisfied, the polarity adjustment process is exited. It should be understood that the first length condition is different from the second length condition, and the first width condition is also different from the second width condition.

[0070] In the process of adjusting the polarity of the signal transmission line of the display panel, the signal transmission line includes but is not limited to the data line, and other signal lines that cause crosstalk to VCOM, such as scan lines, other signal lines, etc., are applicable. The specific adjustment process includes but is not limited to outputting the set DOT_C signal, POLC signal and POL signal to change the polarity of the data line.

[0071] Specifically, step S200 includes:

[0072] S210: Compare the format of the target image data with the format of preset template data, select first image data that meets preset conditions, and calculate a first length and a first width of the first image data.

[0073] Among them, the preset template data is similar to the above-mentioned minimum detection unit. According to the actual display crosstalk situation, various display anomalies can be foreseen, and then various preset module data are set according to these display anomalies. Among them, the first image data is the normal area in the preset template data, which conforms to the above-mentioned multiple cyclically continuous minimum detection units, so that the first image data can be selected more quickly.

[0074] See also Fig. 9As shown in the figure, the E area is the detection area, and the F area is an area where part or all of the detection area is composed of the minimum detection unit specified by the timing controller. Of course, in this embodiment, the F area is an area that is composed of all the minimum detection units specified by the timing controller. In this embodiment, the selected first image data is a more accurate algorithm, which directly distinguishes different situations according to the length and width of the normal area composed of the cyclic continuous minimum detection units, and then chooses whether to execute the polarity adjustment process.

[0075] Specifically, the first length condition is: the first length is greater than or equal to the first preset length; the first width condition is: the first width is greater than or equal to the first preset width; the second length condition is: the first length is less than or equal to the difference between the first preset length and the first standard value; the second width condition is: the first width is less than or equal to the difference between the first preset width and the second standard value.

[0076] Wherein, the first preset length and the first preset width are related to the resolution of the display panel. For example, in a display panel with a resolution of 1920*1080, 1920 pixel units are arranged in the first direction and 1080 pixel units are arranged in the second direction. Wherein, the range of the first preset length is between 0-1920, and the range of the first preset width is between 0-1080. It should be understood that the first preset length and the first preset width cannot select endpoint values. The first preset length and the first preset width refer to the total length or total width of a plurality of pixel units (pixels). For example, when the first preset length is 1000, the first preset length is the length of 1000 pixels. The first standard value and the second standard value are hysteresis reference values, the first standard value is less than the first preset length, and the second standard value is less than the first preset width. The first preset length, the first preset width, the first standard value and the second standard value of the present application all need to be selected according to actual conditions.

[0077] Specifically, the first preset length, the first preset width, the first standard value and the second standard value can be adjusted according to the feedback process, and after performing the polarity adjustment process of the signal transmission line of the display device, it also includes:

[0078] S600: Determine whether the abnormal parameters of the target image data after the polarity adjustment process are within the preset specifications. If not, adjust at least one of the first preset length and the first standard value in the second length condition and the first preset width and the second standard value in the second width condition, and perform the polarity adjustment process for the signal transmission line of the display device again.

[0079] Specifically, after step S400, the method further includes:

[0080] S500a: when the first image data does not satisfy the first length condition or the first width condition, determining whether to perform a polarity adjustment process for the signal transmission line of the display panel according to the last detection result;

[0081] or,

[0082] S500b: when the first image data does not satisfy the second length adjustment or second width condition, determining whether to perform a polarity adjustment process for the signal transmission line of the display panel according to the last detection result;

[0083] Among them, when the last detection result is to execute the polarity adjustment process of the signal transmission line of the display panel, the polarity adjustment process of the signal transmission line of the display panel continues to be executed; when the last detection result is to exit the polarity adjustment process, the exit of the polarity adjustment process continues.

[0084] In this embodiment, that is, in other cases where the first length condition and the first width condition are not met at the same time, and in other cases where the second length condition and the second width condition are not met at the same time, it is necessary to maintain the execution status of the previous frame image based on whether the polarity adjustment process is executed in the previous frame image.

[0085] Specifically, see Fig.10 As shown, the steps in S300 include:

[0086] S310: Output a first control signal, a second control signal, and a third control signal;

[0087] S320: changing the potential of any one of the first control signal, the second control signal and the third control signal so that the abnormal parameters of the target image data after the polarity adjustment process are within a preset specification.

[0088] The first control signal is a DOT_C signal, the second control signal is a POL signal, and the third control signal is a POLC signal. During the scanning and displaying process of the display panel, a frame time may include a scanning period and a blank period. The scanning period is used for scanning multiple scanning lines line by line and then gradually inputting multiple data into different pixel units. The blank period is used for processing various data. Fig.11 As shown, the polarity adjustment process function is entered, and the TCON output DOT_C signal / POL signal / POLC signal can change in any interval during the blank period. The H / L potential switching of the DOT_C signal / POL signal / POLC signal corresponds to the output as shown in Fig.10. For example, the DOT_C signal / POL signal / POLC signal are all at L potential, and the potentials on the data lines Y1, Y2, Y3, Y4, Y5, and Y6 are: +, -, +, -, +, -. After entering the PDF function, there is no specific limitation on the change rules of the DOT_C signal / POL signal / POLC signal. For example, the potential of the POLC signal becomes H, and the potential changes on the data lines Y1, Y2, Y3, Y4, Y5, and Y6 are: -, +, -, +, -, +. By detecting whether the abnormal parameters of abnormal display such as crosstalk and greening are within the preset specifications, if not, the potential of one of the DOT_C signal / POL signal / POLC signal is continuously changed until the abnormal parameters of abnormal display such as crosstalk and greening are within the preset specifications. The potential of one of the DOT_C signal / POL signal / POLC signal is adjusted in the eight ways listed in the table, and is not limited to the order in the table.

[0089] After exiting the polarity adjustment process, TCON can switch back to the preset value of the DOT_C signal / POL signal / POLC signal in any interval of the blank period according to the normal output. The preset value is the DOT_C signal / POL signal / POLC signal value required for the next frame of the display screen. The preset value of the DOT_C signal / POL signal / POLC signal for each frame of the display screen can be the same or different. That is, when exiting the PDF function, the preset value of the DOT_C signal / POL signal / POLC signal that TCON switches back to has nothing to do with the initial value of the DOT_C signal / POL signal / POLC signal of the frame.

[0090] In another embodiment, see Fig.12 As shown, it can be used in combination with the area comparison method. Specifically, the step of performing screen detection on the image data and selecting target image data that meets the preset conditions includes:

[0091] S210a: Compare the format of the target image data with the format of the preset template data, and select the first image data that meets the preset conditions;

[0092] S220a: Calculate a first length and a first width of the first image data, and calculate an area of ​​the first image data;

[0093] S230a: Determine whether the ratio of the area of ​​the first image data to the entire detection area is greater than or equal to a first preset ratio;

[0094] S240a: If the judgment result is yes, then judging whether the first length and the first width of the first image data satisfy the first length condition and the first width condition respectively;

[0095] S250a: If the judgment result is no, then exit the polarity adjustment process;

[0096] Among them, the preset conditions include: a screen consisting of multiple minimum detection units; the first length is the length of the first image data in the first direction, the first width is the length of the first image in the second direction, and the first direction is perpendicular to the second direction.

[0097] In this embodiment, a preliminary screening is performed by using the area ratio method, and then a further screening is performed by using the length-width comparison method.

[0098] See also Fig.13 As shown, the dotted frame is a detection screen, for example, the area formed by the minimum repeating unit of the sub-pixel lighting and the sub-pixel darkening in the detection area is the first image data M, the area formed by the sub-pixel lighting, sub-pixel lighting, sub-pixel lighting, and sub-pixel lighting in the detection area is N, and the entire detection area is M+N; the detection screen has the following situations:

[0099] a) Condition 1: (first image data M / entire detection area (M+N)) ≥ S;

[0100] b) Condition 2: SR<(first image data M / entire detection area (M+N)) <S;

[0101] c) Condition 3: (first image data M / entire detection area (M+N))≤SR;

[0102] Among them, S represents the first preset ratio; SR represents the second preset ratio, and R represents the third adjustment value.

[0103] During detection, step S300 can be entered only when condition 1 is satisfied. After entering the PDF function, the PDF function can be exited only when condition 3 is satisfied. When condition 2 is satisfied, the state of the previous frame is maintained.

[0104] After condition 1 is met, the length and width of the first image data M can be compared to determine the first length L and the first width W of the first image data M. For example, the first preset length is a, the first preset width is b, the first standard value is m, and the second standard value is n, and the following conditions are met;

[0105] d) Condition 1: L ≥ a, width W ≥ b;

[0106] e) Condition 2: ① Only one of condition 1 is satisfied, L≥a, W<b; L<a, W≥b; ② Only one of condition 3 is satisfied, L≤am, W>bn; L>am, W≤bn; ③ Both conditions 1 and 3 do not satisfy am<L<a and bn<W<b;

[0107] f) Condition 3: The detection area length L≤am, width W≤bn;

[0108] If the first image data satisfies condition 1 / condition 2 / condition 3 / condition 2 / condition 1 in sequence in five consecutive frames, PDF will hit / hit / exit / exit / hit in sequence.

[0109] In this embodiment, since the length and width of the first image data are also detected and compared, S in the area comparison method does not need to be designed to be very high. In this solution, 90% ≥ S ≥ 80%, R ≤ 5% is sufficient.

[0110] The present application also discloses a storage medium storing a computer program, wherein the computer program, when executed by a processor, implements any one of the above-mentioned image processing methods for a display panel.

[0111] See also Fig.14 As shown, the present application also discloses an image processing device for a display panel, and the image processing device 10 includes: a receiving module 11, a detection module 12, a judgment module 13 and an execution module 14; the receiving module 11 is used to receive target image data; the detection module 12 is used to perform screen detection on the target image data; the judgment module 13 is used to judge whether the first image data satisfies the first length condition, the first width condition, the second length condition and the second width condition; the execution module 14 is used to execute a polarity adjustment process for the signal transmission line of the display panel; wherein, when the first image data satisfies the first length condition and the first width condition at the same time, the polarity adjustment process for the signal transmission line of the display panel is executed; when the first image data satisfies the second length condition and the second width condition at the same time, the polarity adjustment process is exited.

[0112] See also Fig.15 As shown, the present application also discloses a display device, wherein the display device 20 includes a memory 21 and a processor 22, wherein the memory 21 stores a computer program, and the processor 22 implements any one of the above-mentioned image processing methods for the display panel when executing the computer program on the memory.

[0113] The present application selects the first image data that meets the preset conditions in the picture detection stage, and compares whether the first image data satisfies the first length condition and the first width condition at the same time or satisfies the second length condition and the second width condition at the same time, so as to perform the polarity adjustment process of the signal transmission line of the display panel when the first length condition and the first width condition are met at the same time; and exit the polarity adjustment process when the second length condition and the second width condition are met at the same time. The present application is different from another scheme of the present application, that is, the scheme of judging the area ratio method, in which the area comparison method can only calculate the area ratio, but cannot distinguish whether the target image data is a horizontal rectangle or a vertical rectangle. For the common voltage, the common voltage jitter caused by the data line produces vertical stripes, while the common voltage jitter caused by other signal lines produces horizontal stripes. For horizontal stripes and vertical stripes, there are differences in the selected polarity adjustment process, and different polarity adjustment schemes are required. Moreover, for the area ratio method, it is necessary to meet the ratio of the area of ​​the repeating unit to 95% or more, which is easy to exclude the situation that meets the execution of the polarity adjustment process. The present application selects the first image data that meets the preset conditions from the target image data, and uses the length and width of the first image data as the screening conditions, so as to distinguish the horizontal stripes from the vertical stripes, prevent the polarity adjustment process from being triggered by mistake, and can more accurately control the execution of the polarity adjustment process, thereby improving crosstalk, greenish, increasing the applicability of the product polarity adjustment process, increasing product quality, and improving product competitiveness.

[0114] It should be noted that the inventive concept of the present application can form a large number of embodiments, but the length of the application document is limited and it is impossible to list them one by one. Therefore, under the premise of no conflict, the embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effects will be enhanced.

[0115] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. A method for processing an image of a display panel, characterized in that: Includes steps: receiving target image data; Performing image detection on the target image data, and selecting first image data that meets preset conditions; When the first image data satisfies both the first length condition and the first width condition, performing a polarity adjustment process on the signal transmission line of the display panel; When the first image data satisfies both the second length condition and the second width condition, the polarity adjustment process is exited; The preset conditions include: a picture composed of multiple minimum detection units in a continuous cycle; The step of performing screen detection on the target image data and selecting the first image data that meets the preset conditions includes: Comparing the format of the target image data with the format of the preset template data, selecting the first image data that meets the preset conditions, and calculating the first length and the first width of the first image data; The first length is the length of the first image data in the first direction, the first width is the length of the first image data in the second direction, and the first direction is perpendicular to the second direction; Wherein, the first length condition is: the first length is greater than or equal to a first preset length; The first width condition is: the first width is greater than or equal to a first preset width; The second length condition is: the first length is less than or equal to the difference between the first preset length and the first standard value; The second width condition is: the first width is less than or equal to the difference between the first preset width and the second standard value.

2. The image processing method of a display panel according to claim 1, characterized in that: When the first image data does not satisfy the first length condition or the first width condition, determining whether to perform a polarity adjustment process for the signal transmission line of the display panel according to the last detection result; or, When the first image data does not satisfy the second length adjustment or the second width condition, determining whether to perform a polarity adjustment process for the signal transmission line of the display panel according to the last detection result; Among them, when the last detection result is to execute the polarity adjustment process of the signal transmission line of the display panel, the polarity adjustment process of the signal transmission line of the display panel continues to be executed; when the last detection result is to exit the polarity adjustment process, the exit of the polarity adjustment process continues.

3. The image processing method of a display panel according to claim 1, characterized in that: The process of performing polarity adjustment on the signal transmission line of the display panel includes: Outputting a first control signal, a second control signal and a third control signal; The potential of any one of the first control signal, the second control signal and the third control signal is changed so that the abnormal parameter of the target image data after the polarity adjustment process is within a preset specification.

4. The image processing method of a display panel according to claim 1, characterized in that: After performing the polarity adjustment process on the signal transmission line of the display panel, the method further includes: Determine whether the abnormal parameters of the target image data after the polarity adjustment process are within the preset specifications. If not, adjust at least one of the first preset length and the first standard value in the second length condition and the first preset width and the second standard value in the second width condition, and perform the polarity adjustment process for the signal transmission line of the display panel again.

5. The image processing method of a display panel according to claim 1, characterized in that: The step of performing screen detection on the target image data and selecting the first image data that meets the preset conditions includes: Comparing the format of the target image data with the format of the preset template data, and selecting the first image data that meets the preset conditions; calculating a first length and a first width of the first image data, and calculating an area of ​​the first image data; Determining whether a ratio of an area of ​​the first image data to an entire detection area is greater than or equal to a first preset ratio; If the judgment result is yes, then judging whether the first length and the first width of the first image data satisfy the first length condition and the first width condition respectively; If the judgment result is no, then exit the polarity adjustment process; Among them, the preset conditions include: a screen consisting of multiple minimum detection units; the first length is the length of the first image data in the first direction, the first width is the length of the first image in the second direction, and the first direction is perpendicular to the second direction.

6. An image processing device for a display panel, characterized in that: include: A receiving module, used for receiving target image data; A detection module, used for performing image detection on the target image data and selecting first image data that meets preset conditions; A judging module, used to judge whether the first image data satisfies a first length condition, a first width condition, a second length condition and a second width condition; An execution module, used for executing a polarity adjustment process for a signal transmission line of the display panel; Wherein, when the first image data satisfies the first length condition and the first width condition at the same time, the polarity adjustment process of the signal transmission line of the display panel is performed; when the first image data satisfies the second length condition and the second width condition at the same time, the polarity adjustment process is exited; The preset conditions include: a picture composed of multiple minimum detection units in a continuous cycle; The step of performing screen detection on the target image data and selecting the first image data that meets the preset conditions includes: Comparing the format of the target image data with the format of the preset template data, selecting the first image data that meets the preset conditions, and calculating the first length and the first width of the first image data; The first length is the length of the first image data in the first direction, the first width is the length of the first image data in the second direction, and the first direction is perpendicular to the second direction; Wherein, the first length condition is: the first length is greater than or equal to a first preset length; The first width condition is: the first width is greater than or equal to a first preset width; The second length condition is: the first length is less than or equal to the difference between the first preset length and the first standard value; The second width condition is: the first width is less than or equal to the difference between the first preset width and the second standard value.

7. A storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the image processing method for a display panel according to any one of claims 1 to 5 is implemented.

8. A display device, comprising a memory and a processor, wherein a computer program is stored in the memory, wherein: The processor implements the image processing method for a display panel according to any one of claims 1 to 5 when executing the computer program on the memory.

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