CN111554245A - Display device driving method and display device - Google Patents
Display device driving method and display device Download PDFInfo
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- CN111554245A CN111554245A CN202010439687.4A CN202010439687A CN111554245A CN 111554245 A CN111554245 A CN 111554245A CN 202010439687 A CN202010439687 A CN 202010439687A CN 111554245 A CN111554245 A CN 111554245A
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0242—Compensation of deficiencies in the appearance of colours
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Abstract
The application provides a driving method of a display device and the display device, the display device comprises a display panel and a control panel electrically connected with the display panel, the control panel comprises a first time schedule controller, a second time schedule controller, a counting module and a storage module, in the application, because each pixel in each frame of video data has different gray scales and the random degree of each gray scale arrangement is higher, the first decoding data of a certain frame in the storage module is used as first jitter data, or the second decoding data is used as second jitter data, the randomness between the first jitter data and the second jitter data is also higher, after the jitter processing, the brightness difference of the pixels in the first display area and the second display area has randomness, finally, the whole frame cannot have obvious color difference, and the display effect is better.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a driving method of a display device and a display device.
Background
When displaying an image, a conventional display panel usually uses a low-bit display panel to display high-bit image data in order to reduce the cost, and at this time, a dither (dither) module in a timing controller needs to dither pixel gray scale data. In the matched time sequence controller corresponding to a certain model, a plurality of jitter data of the jitter module are all fixedly arranged, so that a plurality of corresponding jitter control tables are also fixedly arranged.
At present, most time schedule controllers consider the cascade function, two time schedule controllers are arranged in a control panel and respectively provide jitter processing for a left display area and a right display area of a display panel, however, jitter data in the left time schedule controller and the right time schedule controller are usually inconsistent and present regularity difference, so after the jitter processing, obvious color difference occurs in the left display area and the right display area, and the display effect is influenced.
Therefore, the conventional display panel has the technical problem that the same picture has large color difference, and needs to be improved.
Disclosure of Invention
The embodiment of the application provides a driving method of a display device and the display device, which are used for relieving the technical problem of large chromatic aberration of the same picture in the conventional display panel.
The application provides a driving method of a display device, the display device comprises a display panel and a control panel electrically connected with the display panel, the control panel comprises a first time schedule controller, a second time schedule controller, a counting module and a storage module, the first time schedule controller comprises a first decoding module and a first shaking module, the second time schedule controller comprises a second decoding module and a second shaking module, and the driving method comprises the following steps:
the first decoding module decodes first display data corresponding to each frame of image in the first video data to obtain first decoded data, and the second decoding module decodes second display data corresponding to each frame of image in the second video data to obtain second decoded data;
the first dithering module is used for dithering the first decoding data based on a first dithering control table corresponding to first dithering data and inputting processed first pixel gray scale data into a first display area of the display panel, and the second dithering module is used for dithering the second decoding data based on a second dithering control table corresponding to second dithering data and inputting processed second pixel gray scale data into a second display area of the display panel;
the counting module counts the number of frames of the display pictures in the display panel after the display panel is started;
the storage module stores first decoding data and second decoding data corresponding to the current frame when the counting value of the counting module is equal to a preset value;
at least one of the first timing controller and the second timing controller reads the corresponding first decoded data or the second decoded data from the storage module when starting up next time, and uses the first decoded data or the second decoded data as the corresponding first jitter data or second jitter data.
In the method for driving a display device according to the present application, after the step of storing the first decoded data and the second decoded data corresponding to the current frame, the method further includes: and clearing the count value.
In the driving method of the display device according to the present application, at least one of the first timing controller and the second timing controller reads the corresponding first decoded data or the second decoded data from the memory module at the next power-on, and uses the read data as the corresponding first shaking data or second shaking data, including:
the first time schedule controller selects part of data from the first decoding data as first jitter data in a first selection mode, the second time schedule controller selects part of data from the second decoding data as second jitter data in a second selection mode, and the first selection mode is different from the second selection mode.
In the driving method of the display device according to the present application, the counting module includes a first counting module disposed in the first timing controller and a second counting module disposed in the second timing controller, and the counting module counts the number of frames of the display screen in the display panel after the display panel is turned on, and includes:
the first counting module counts the number of frames of the display pictures in the display panel after the display panel is started, and the second counting module counts the number of frames of the display pictures in the display panel after the display panel is started.
In the driving method of the display device of the present application, when the count value of the counting module is equal to the preset value, the step of storing the first decoded data and the second decoded data corresponding to the current frame by the storage module includes:
the storage module stores first decoding data corresponding to the current frame when a first count value of the first counting module is equal to a first preset value, and stores first decoding data corresponding to the current frame when a second count value of the second counting module is equal to a second preset value.
In the driving method of the display device of the present application, the step of storing, by the storage module, first decoded data corresponding to the current frame when the first count value of the first counting module is equal to a first preset value, and storing, by the storage module, the first decoded data corresponding to the current frame when the second count value of the second counting module is equal to a second preset value includes: and setting the first preset value and the second preset value to be unequal.
The application also provides a display device, including display panel and with display panel electric connection's control panel, the control panel includes:
the first timing controller comprises a first decoding module and a first dithering module, wherein the first decoding module is used for decoding first display data corresponding to each frame of image in first video data to obtain first decoding data, the first dithering module is used for dithering the first decoding data based on a first dithering control table corresponding to the first dithering data, and inputting processed first pixel gray scale data to a first display area of the display panel;
the second timing controller comprises a second decoding module and a second dithering module, the second decoding module is used for decoding second display data corresponding to each frame of image in second video data to obtain second decoded data, the second dithering module is used for dithering the second decoded data based on a second dithering control table corresponding to the second dithering data, and second pixel gray scale data obtained after the dithering is input into a second display area of the display panel;
the counting module is used for counting the number of frames of the display pictures in the display panel after the display panel is started;
the storage module is used for storing first decoding data and second decoding data corresponding to the current frame when the counting value of the counting module is equal to a preset value;
at least one of the first timing controller and the second timing controller is configured to read the first decoded data or the second decoded data from the storage module when the computer is started next time, and use the first decoded data or the second decoded data as corresponding first jitter data or second jitter data.
In the display device of the application, the counting module is further configured to clear the count value after the storage module completes storage of the first decoded data and the second decoded data corresponding to the current frame.
In the display device of the application, the first timing controller is configured to select a part of data from the first decoded data as first jitter data in a first selection manner, the second timing controller selects a part of data from the second decoded data as second jitter data in a second selection manner, and the first selection manner is different from the second selection manner.
In the display device of the application, the counting module is in including setting up first counting module in the first time schedule controller and setting are in second counting module in the second time schedule controller, first counting module is used for right after the start-up carry out first count to the frame number of display screen in the display panel, second counting module is used for right after the start-up carry out the second count to the frame number of display screen in the display panel.
In the display device of the application, the storage module is configured to store first decoded data corresponding to a current frame when a first count value of the first counting module is equal to a first preset value, and store the first decoded data corresponding to the current frame when a second count value of the second counting module is equal to a second preset value.
Has the advantages that: the application provides a display device and a driving method thereof, wherein the display device comprises a display panel and a control panel electrically connected with the display panel, the control panel comprises a first time schedule controller, a second time schedule controller, a counting module and a storage module, the first time schedule controller comprises a first decoding module and a first shaking module, the second time schedule controller comprises a second decoding module and a second shaking module, and the driving method comprises the following steps: the first decoding module decodes first display data corresponding to each frame of image in the first video data to obtain first decoded data, and the second decoding module decodes second display data corresponding to each frame of image in the second video data to obtain second decoded data; the first dithering module is used for dithering the first decoding data based on a first dithering control table corresponding to first dithering data and inputting processed first pixel gray scale data into a first display area of the display panel, and the second dithering module is used for dithering the second decoding data based on a second dithering control table corresponding to second dithering data and inputting processed second pixel gray scale data into a second display area of the display panel; the counting module counts the number of frames of the display pictures in the display panel after the display panel is started; the storage module stores first decoding data and second decoding data corresponding to the current frame when the counting value of the counting module is equal to a preset value; at least one of the first timing controller and the second timing controller reads the corresponding first decoded data or the second decoded data from the storage module when starting up next time, and uses the first decoded data or the second decoded data as the corresponding first jitter data or second jitter data. Because each pixel in each frame of the video data has different gray scales and the random degree of each gray scale arrangement is higher, after the first decoding data of a certain frame in the storage module is used as the first jitter data or the second decoding data is used as the second jitter data, the randomness between the first jitter data and the second jitter data is higher, and after the jitter processing is carried out, the brightness difference of the pixels in the first display area and the second display area has randomness, so that the whole frame cannot have obvious color difference, and the display effect is better.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart of a driving method of a display device according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of a display device according to an embodiment of the present application.
Fig. 3 is a schematic diagram of jitter data and a jitter control table in a display device according to an embodiment of the present application.
Fig. 4 is a schematic workflow diagram of a display device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The embodiment of the application provides a driving method of a display device and the display device, which are used for relieving the technical problem of large chromatic aberration of the same picture in the conventional display panel.
As shown in fig. 1, the present application provides a driving method of a display device, the display device structure is as shown in fig. 2, and the display device includes a display panel and a control board 200 electrically connected to the display panel, the control board 200 includes a first timing controller 21, a second timing controller 22, a counting module and a storage module 23, the first timing controller 21 includes a first decoding module 211 and a first dithering module 212, the second timing controller 22 includes a second decoding module 221 and a second dithering module 222, and the driving method includes:
101: the first decoding module 211 decodes first display data corresponding to each frame of image in the first video data to obtain first decoded data, and the second decoding module 221 decodes second display data corresponding to each frame of image in the second video data to obtain second decoded data;
102: the first dithering module 212 performs dithering on the first decoded data based on a first dithering control table corresponding to the first dithering data and inputs the processed first pixel gray scale data to a first display area 11 of the display panel, and the second dithering module 222 performs dithering on the second decoded data based on a second dithering control table corresponding to the second dithering data and inputs the processed second pixel gray scale data to a second display area 12 of the display panel;
103: the counting module counts the frame number of the display pictures in the display panel after starting up;
104: the storage module 23 stores the first decoded data and the second decoded data corresponding to the current frame when the count value T of the counting module is equal to the preset value N;
105: at least one of the first timing controller 21 and the second timing controller 22 reads the corresponding first decoded data or second decoded data from the memory module 23 when the computer is turned on next time, and uses the corresponding first decoded data or second decoded data as the corresponding first jitter data or second jitter data.
A driving method of the display device of the present application will be described below with reference to fig. 1 to 4.
In 101, a first decoding module 211 performs decoding processing on first display data corresponding to each frame of image in first video data to obtain first decoded data, and a second decoding module 221 performs decoding processing on second display data corresponding to each frame of image in second video data to obtain second decoded data.
As shown in fig. 2, the display panel includes a display area including a first display area 11 and a second display area 12, and a non-display area (not shown) disposed around the display area. The control board 200 is connected to the printed circuit board 500 through the flexible circuit board 400, and the printed circuit board 500 is connected to the display panel through the source chip on film 600, so that the control board 200 and the display panel are electrically connected. In the present application, the display panel is a liquid crystal display panel.
A first timing controller 21 and a second timing controller 22 are provided in the control board 200, the first timing controller 21 for inputting various display data to the first display region 11, and the second timing controller 22 for inputting various display data to the second display region 12. Two time sequence controllers are arranged in the control panel 200 to work simultaneously, each time sequence controller correspondingly controls one display area in the display panel, each time sequence controller can only acquire and process video data in the display area corresponding to the time sequence controller, and the two display areas jointly form the display area of the whole display panel.
The time sequence controller is used for converting the received data signals in the V-By-One, LVD10 and EDP formats into data signals in the Mini-LVD10, R10D10, TTL formats and the like which can be identified By the display panel, and after the time sequence controller receives video data, the video data needs to be decoded and jittered and then is input to the display panel. In the present embodiment, the video data includes first video data and second video data, the first video data is input to the first display area 11 for display, the second video data is input to the second display area 12 for display, and the first video data and the second video data together form a complete display screen.
In one embodiment, the display device further includes a driving board electrically connected to the control board 200, and the driving board includes a video generation module for generating video data and inputting first video data corresponding to the first display area 11 to the first timing controller 21 and inputting second video data corresponding to the second display area to the second timing controller 23. The video generation module comprises a field programmable gate array chip or a complex programmable logic device chip. The driving board inputs first video data to the first timing controller 21 and second video data to the second timing controller 23 through the V-by-one interface.
In the first timing controller 21, the first decoding module 211 is configured to perform decoding processing on first display data corresponding to each frame of image in the first video data to obtain first decoded data. The video data can be decomposed into a plurality of frames of images, and when the plurality of frames of images are displayed at a certain frequency, a viewer can see dynamic video. Each frame of image corresponds to a first display data, after the first display data are decoded, the gray scale value of each pixel in the frame of image is obtained, and as the colors to be displayed in one frame of image are different, the obtained gray scale values are not completely equal and are irregular, that is, the obtained first decoding data are a plurality of random gray scale numbers, and each gray scale number is an integer. Correspondingly, the second decoding module 221 in the second timing controller 22 decodes the second display data corresponding to each frame of image in the second video data to obtain second decoded data, which is also a plurality of random gray scale numbers, and each gray scale number is also an integer.
In 102, the first dithering module 212 performs dithering on the first decoded data based on a first dithering control table corresponding to the first dithering data and inputs the processed first pixel gray scale data to the first display area 11 of the display panel, and the second dithering module 222 performs dithering on the second decoded data based on a second dithering control table corresponding to the second dithering data and inputs the processed second pixel gray scale data to the second display area 12 of the display panel.
In order to reduce the cost in manufacturing a display device, a 6-bit liquid crystal display panel is usually used to display 8-bit image data, the number of 6-bit displayable gray scales is 64 levels, the number of 8-bit displayable gray scales is 256 levels, the 8-bit data includes 8 bits, the 6-bit data includes 6 bits, when the 8-bit data is directly output, only the first 6 bits of data are displayed, and the last 2 bits are lost, so that the displayable gray scales are only 64 levels, and in order to make the finally output displayed image still have 8-bit gray scale levels, the 6-bit data needs to be dithered so that the finally output displayed image can display 256 gray scales.
The principle of jitter is as follows: the 8-bit data is divided into high 6 bits and low 2 bits, the low 2-bit data is calculated based on a jitter control table corresponding to preset jitter data, and finally the data is sent out for display by the high 6 bits or the high 6 bits plus 1 according to the calculation result, so that 256 gray scales can be displayed finally on the whole.
As shown in fig. 3, taking 2 × 2 pixel units taken out of the display panel as an example, each pixel unit includes 4 pixels, each pixel has a bright state or a non-bright state, the unfilled table in fig. 2 indicates a bright state, and the filled table indicates a non-bright state. For each pixel point in the display panel, only one gray scale can be displayed when the pixel point is lighted, and the display picture is represented by a plurality of 2 x 2 pixel units, so that the overall brightness of the pixel unit is the average value of the brightness of 4 pixel points corresponding to each 2 x 2 pixel unit, and at most 5 different gray scale values can be represented according to different lighting and darkness quantities of the pixels in the pixel unit, so that the number of gray scales which can be displayed by the whole display picture is increased. When all the pixel points are not lighted, the pixel points are marked as 0, when all the pixel points are lighted, the pixel points are marked as 4, the intermediate states are sequentially marked as 1, 2 and 3, the numbers are the jitter data in the embodiment of the application, and the number 1 is used for indicating brightness, and the number 0 is used for indicating no brightness, so that corresponding to each gray level value, a 2 x 2 table is existed, and the table corresponds to the gray level value, and the tables are the jitter control tables in the embodiment of the application.
In addition to performing spatial dithering on each frame, each pixel in the screen is usually subjected to temporal dithering, that is, continuous multiple frames are set as one frame period when the screen is displayed, dithering is performed by using the same dithering data in each frame period, the number of 1 s and 0 s in the dithering control table corresponding to the dithering data is fixed, but the positions of 0 s and 1 s in each frame are rotated according to a certain sequence. For a 2 x 2 dither control table, each frame period comprises 4 frames.
In the above analysis, the 2 × 2 table is taken as an example for explanation, but the pixel units extracted from the display screen may also be of other specifications, such as 3 × 3, 4 × 4 or larger pixel units, and when the number of the pixel points in the extracted pixel units is larger, the corresponding dithering data includes more numerical values. For each model, the jitter data set in the timing controller is determined by hardware, that is, the jitter data is a series of integer values arranged according to a preset sequence, and each integer value corresponds to a jitter control table.
When 8-bit decoded data is input to each pixel point of a 2 x 2 pixel unit, each 8-bit decoded data is divided into a high 6-bit data and a low 2-bit data, then the low 2-bit data is operated with data in a jitter control table, if a value in a table corresponding to a pixel point is 0, the low 2-bit data is lost by the corresponding pixel point, the output 6-bit data is only the high 6-bit data of the 8-bit data, if the value in the table corresponding to the pixel point is 1, the corresponding pixel point is towards the high 6-bit +1, the output 6-bit data is 6-bit data obtained by adding 1 to the high 6-bit data of the 8-bit data, and the output data is the pixel gray scale data in the embodiment. By the setting method, the low 2-bit data of part of the pixel points are stored in a mode of 6 bits +1 bits higher, so that the number of gray scales which can be displayed on a display picture is increased, and more colors can be displayed.
From the above analysis, it can be seen that, when the number of 1 s in the dither control table is larger, the larger the average gray-scale value of each pixel unit is, the larger the gray-scale value of the entire display screen formed by each pixel unit is, and when the number of 0 s in the dither control table is larger, the smaller the average gray-scale value of each pixel unit is, the smaller the gray-scale value of the entire display screen formed by each pixel unit is. That is, the gray scale value finally presented in a certain frame of display screen is related to the jitter control table, and the jitter control table is determined by the jitter data, so the jitter data has a large influence on the gray scale value of the display screen.
After the first decoding module 211 obtains the first decoded data, the first dithering module 212 performs dithering processing on the first decoded data based on a first dithering control table corresponding to the first dithering data, and inputs the processed first pixel gray-scale data into the first display area 11 of the display panel, so that the first display area 11 can display a picture. After the second decoding module 221 obtains the second decoded data, the second dithering module 222 in the second timing controller 22 performs dithering on the second decoded data based on the second dithering control table corresponding to the second dithering data, and inputs the processed second pixel gray-scale data into the second display area 12 of the display panel, so that the second display area 12 can display the picture.
In 103, the counting module counts the number of frames of the display screen in the display panel after the power-on.
The counting module counts from the display panel displaying the first frame, the counting module is arranged in the time schedule controller and comprises a first counting module 213 arranged in the first time schedule controller 21 and a second counting module 223 arranged in the second time schedule controller 22, the first counting module 213 counts the number of frames of the display frame in the display panel after starting, and the second counting module 223 counts the number of frames of the display frame in the display panel after starting.
At 104, when the count value T of the counting module is equal to the preset value N, the storage module 23 stores the first decoded data and the second decoded data corresponding to the current frame.
After counting, the counting module judges whether the counting value T is equal to N, wherein N is a preset value, and the size of N can be set according to the actual situation. The counting is performed by setting a fixed time to perform a certain operation, and when T is equal to N, it indicates that the preset fixed time has elapsed since the boot, at this time, the first timing controller 21 obtains the decoded first decoded data from the first decoding module 211, the second timing controller 22 obtains the decoded second decoded data from the second decoding module 221, and then the first decoded data and the second decoded data are burned into the storage module 23. When the count is less than N, the count is continued until the count value T is equal to N.
During counting, the storage module stores the first decoded data corresponding to the current frame when the first count value T1 of the first counting module 213 equals to the first preset value N1, and stores the first decoded data corresponding to the current frame when the second count value T2 of the second counting module 223 equals to the second preset value N2, where the first preset value N1 and the second preset value N2 may be equal or unequal. When the first preset value N1 and the second preset value N2 are equal, the storage module 23 stores first decoded data corresponding to the first display area 11 in the nth 1 frame and second decoded data corresponding to the second display area 12, where the first decoded data are gray-scale values of pixels in the first display area 11 in the nth 1 frame, the second decoded data are gray-scale values of pixels in the second display area 12 in the nth 1 frame, and the first decoded data and the second decoded data have randomness. When the first preset value N1 and the second preset value N2 are not equal, the storage module 23 stores the first decoded data corresponding to the first display area 11 at the N1 th frame, and stores the second decoded data corresponding to the second display area 12 at the N2 th frame, where the first decoded data is a gray-scale value of each pixel in the first display area 11 at the N1 th frame, the second decoded data is a gray-scale value of each pixel in the second display area 12 at the N2 th frame, and the randomness between the first decoded data and the second decoded data is further increased.
105: at least one of the first timing controller 21 and the second timing controller 22 reads the corresponding first decoded data or second decoded data from the memory module 23 when the computer is turned on next time, and uses the corresponding first decoded data or second decoded data as the corresponding first jitter data or second jitter data.
The storage module 23 acquires first decoded data and second decoded data in the current boot process, when the display device is booted next time, the display device re-executes steps 101 and 102, and when the display device is booted 102, at least one of the first timing controller 21 and the second timing controller 22 reads corresponding first jitter data or second jitter data from the storage module 23, wherein the first jitter data is first decoded data stored in the previous boot, and the second jitter data is second decoded data stored in the previous boot.
In addition, the first timing controller 21 and the second timing controller 22 may not use all values in the first decoded data as the jitter data, and in one embodiment, the first timing controller 21 is configured to select a part of the data from the first decoded data as the first jitter data in a first selection manner, and the second timing controller 22 selects a part of the data from the second decoded data as the second jitter data in a second selection manner, where the first selection manner is different from the second selection manner. The selection mode may be different in number, for example, m data are selected from the first decoded data as the first jitter data, n data are selected from the second decoded data as the second jitter data, and m is not equal to n; or the selection sequence may be different, for example, reading every a number of intervals from the first decoded data, and reading every b number of intervals from the second decoded data. The randomness of the first jitter data and the second jitter data is further increased through different selection modes.
As can be seen from the foregoing embodiment, after each startup, the counting module counts the number of frames of the display image in the display panel, and when the count value T is equal to the preset value N, the storage module 23 stores the first decoded data and the second decoded data corresponding to the current frame, where the first decoded data and the second decoded data are both a plurality of randomly arranged integer gray-scale values. At the next time of starting up, at least one of the first timing controller 21 and the second timing controller 22 reads the first decoded data or the second decoded data from the storage module 23, and uses the first decoded data or the second decoded data as corresponding first jitter data or second jitter data. The first timing controller 21 may read the first decoded data from the storage module 23 and use the first decoded data as corresponding first jitter data, the second timing controller 22 does not read data, or the second timing controller 22 reads the second decoded data from the storage module 23 and uses the second decoded data as corresponding second jitter data, the first timing controller 21 does not read data, or the first timing controller 21 reads the first decoded data from the storage module 23 and uses the first decoded data as corresponding first jitter data, and the second timing controller 22 reads the second decoded data from the storage module 23 and uses the second decoded data as corresponding second jitter data. And reading the time schedule controller corresponding to the decoding data, and carrying out dithering processing on the corresponding dithering module by using new dithering data when the computer is started next time.
In the prior art, the first dithering data in the first timing controller 11 and the second dithering data in the second timing controller 12 are matched with the corresponding hardware, so that a plurality of values corresponding to the first dithering data are arranged fixedly, a plurality of data corresponding to the second dithering data are also arranged fixedly, and the first dithering data is inconsistent with the second dithering data, when a picture is displayed, the first pixel gray scale data input to the first display area 11 is dithered based on the first dithering control table of the first dithering data, the second pixel gray scale data input to the second display area 12 is dithered based on the second dithering control table of the second dithering data, in each frame period, the overall gray scale in the first display area 11 is different from the overall gray scale in the second display area 12, and because the first dithering data and the second dithering data are arranged fixedly, the difference between the two is also a regular change, so that when a picture is displayed, the brightness of the first display area 11 and the second display area 12 is different visually, and a color difference exists, which affects the display effect.
According to the driving method, the number of the display frame is counted, when the counting value T is equal to the preset value N, the corresponding first decoding data and the second decoding data in the Nth frame are stored, at least one of the first decoding data and the second decoding data is used as the shaking data in the next starting, and due to the fact that the new shaking data are a plurality of randomly arranged integer gray-scale values, after shaking processing is conducted, the brightness difference between the first display area 11 and the second display area 12 in the displaying process is random, fixed brightness difference cannot occur, the whole picture cannot have obvious color difference, and the display effect is good.
The present application further provides a display device, which is driven by the driving method described in any of the above embodiments. As shown in fig. 2, the display device of the present application includes a display panel and a control board 200 electrically connected to the display panel, wherein the control board 200 includes a first timing controller 21, a second timing controller 22, a counting module and a storage module 23;
the first timing controller 21 includes a first decoding module 211 and a first dithering module 212, where the first decoding module 211 is configured to decode first display data corresponding to each frame of image in first video data to obtain first decoded data, and the first dithering module 212 is configured to dither the first decoded data based on a first dithering control table corresponding to the first dithering data, and input processed first pixel grayscale data to the first display area 11 of the display panel;
the second timing controller 22 includes a second decoding module 221 and a second dithering module 222, where the second decoding module 221 is configured to decode second display data corresponding to each frame of image in the second video data to obtain second decoded data, and the second dithering module 222 is configured to dither the second decoded data based on a second dithering control table corresponding to the second dithering data, and input second pixel grayscale data obtained after the dithering processing to the second display area 12 of the display panel;
the counting module is used for counting the number of frames of display pictures in the display panel after the display panel is started;
the storage module 23 is configured to store first decoded data and second decoded data corresponding to the current frame when the count value T of the counting module is equal to the preset value N;
at least one of the first timing controller 21 and the second timing controller 22 is configured to read the first decoded data or the second decoded data from the storage module 23 when the computer is turned on next time, and use the first decoded data or the second decoded data as corresponding first jitter data or second jitter data.
Fig. 4 is a schematic diagram of a work flow of the display device of the present application, which is described below with reference to fig. 1 and 4, and the work flow includes the following steps:
401: and starting.
402: and starting up and electrifying, and reading the jitter data from the storage module by the time schedule controller.
As shown in fig. 2, the memory module 23 is disposed in the control board 200, and the memory module 23 may be a flash memory, or any one of a coded flash memory, a random access memory, a double data rate synchronous dynamic random access memory, a read only memory, and a static random access memory. One memory module 23 may be provided in the control board 200 to store data required by the first and second timing controllers 21 and 22, and two memory modules 23 may be provided to store data required by the first and second timing controllers 21 and 22, respectively. After the power-on, at least one of the first timing controller 21 and the second timing controller 22 reads the corresponding first jitter data or second jitter data from the memory module 23.
403: the jitter module in the time sequence controller operates according to the jitter data.
The first dithering module 212 performs dithering on the first decoded data obtained after decoding by the first decoding module 211 based on a first dithering control table corresponding to the first dithering data, and inputs the processed first pixel gray scale data to the first display area 11 of the display panel. The second dithering module 222 performs dithering on the second decoded data obtained after decoding by the second decoding module 221 based on a second dithering control table corresponding to the second dithering data, and inputs the processed second pixel gray-scale data into the second display area 12 of the display panel.
404: and a counting module in the time sequence controller performs counting operation to count the corresponding frame number T.
The counting module counts from the display panel displaying the first frame, the counting module is arranged in the time schedule controller, and comprises a first counting module 213 arranged in the first time schedule controller 21 and a second counting module 223 arranged in the second time schedule controller 22, the first counting module 213 is used for counting the number of frames of the display frame in the display panel after the power-on, and the second counting module 223 is used for counting the number of frames of the display frame in the display panel after the power-on.
405: and judging whether T is equal to N (N is a set value).
After counting, the counting module judges whether the counting value T is equal to N, wherein N is a preset value, and the size of N can be set according to the actual situation.
406: and when T is equal to N, the time sequence controller acquires the decoding data from the decoding module and burns the decoding data into the storage module.
The counting is performed by setting a fixed time to perform a certain operation, and when T is equal to N, it indicates that the preset fixed time has elapsed since the boot, at this time, the first timing controller 21 obtains the decoded first decoded data from the first decoding module 211, the second timing controller 22 obtains the decoded second decoded data from the second decoding module 221, and then the first decoded data and the second decoded data are burned into the storage module 23. When the count is less than N, the count is continued until the count value T is equal to N.
During counting, the storage module is configured to store the first decoded data corresponding to the current frame when the first count value T1 of the first counting module 213 is equal to the first preset value N1, and store the first decoded data corresponding to the current frame when the second count value T2 of the second counting module 223 is equal to the second preset value N2, where the first preset value N1 and the second preset value N2 may be equal to each other or may not be equal to each other. When the first preset value N1 and the second preset value N2 are equal, the storage module 23 stores first decoded data corresponding to the first display area 11 in the nth 1 frame and second decoded data corresponding to the second display area 12, where the first decoded data are gray-scale values of pixels in the first display area 11 in the nth 1 frame, the second decoded data are gray-scale values of pixels in the second display area 12 in the nth 1 frame, and the first decoded data and the second decoded data have randomness. When the first preset value N1 and the second preset value N2 are not equal, the storage module 23 stores the first decoded data corresponding to the first display area 11 at the N1 th frame, and stores the second decoded data corresponding to the second display area 12 at the N2 th frame, where the first decoded data is a gray-scale value of each pixel in the first display area 11 at the N1 th frame, the second decoded data is a gray-scale value of each pixel in the second display area 12 at the N2 th frame, and the randomness between the first decoded data and the second decoded data is further increased.
407: and the time schedule controller clears the count.
When the storage is completed, the first counting module 21 and the second counting module 22 both clear the counts.
408: and (6) ending.
Through the above steps, the storage module 23 acquires the first decoded data and the second decoded data in the current boot process, and when the display device is booted next time, the display device re-executes steps 101 and 102, and when step 102 is executed, at least one of the first timing controller 21 and the second timing controller 22 reads the corresponding first jitter data or second jitter data from the storage module 23, where the first jitter data is the first decoded data stored in the previous boot, and the second jitter data is the second decoded data stored in the previous boot.
In addition, the first timing controller 21 and the second timing controller 22 may not use all values in the first decoded data as the jitter data, and in one embodiment, the first timing controller 21 is configured to select a part of the data from the first decoded data as the first jitter data in a first selection manner, and the second timing controller 22 selects a part of the data from the second decoded data as the second jitter data in a second selection manner, where the first selection manner is different from the second selection manner. The selection mode may be different in number, for example, m data are selected from the first decoded data as the first jitter data, n data are selected from the second decoded data as the second jitter data, and m is not equal to n; or the selection sequence may be different, for example, reading every a number of intervals from the first decoded data, and reading every b number of intervals from the second decoded data. The randomness of the first jitter data and the second jitter data is further increased through different selection modes.
According to the above steps, the display device of the application, by counting the number of the display frame, and when the count value T is equal to the preset value N, storing the first decoded data and the second decoded data corresponding to the nth frame, and when the device is turned on next time, using at least one of the first decoded data and the second decoded data as the shaking data, since the new shaking data is a plurality of randomly arranged integer gray-scale values, after the shaking processing is performed, the luminance difference between the first display area 11 and the second display area 12 during the display process is also random, a fixed luminance difference cannot occur, and finally, the whole picture cannot have obvious color difference, the display effect is good, and the optical quality is improved.
According to the above embodiment:
the application provides a driving method of a display device and the display device, the display device comprises a display panel and a control panel electrically connected with the display panel, the control panel comprises a first time schedule controller, a second time schedule controller, a counting module and a storage module, the first time schedule controller comprises a first decoding module and a first shaking module, the second time schedule controller comprises a second decoding module and a second shaking module, and the driving method comprises the following steps: the first decoding module decodes first display data corresponding to each frame of image in the first video data to obtain first decoded data, and the second decoding module decodes second display data corresponding to each frame of image in the second video data to obtain second decoded data; the first dithering module is used for dithering first decoding data based on a first dithering control table corresponding to the first dithering data and inputting processed first pixel gray scale data into a first display area of the display panel, and the second dithering module is used for dithering second decoding data based on a second dithering control table corresponding to the second dithering data and inputting processed second pixel gray scale data into a second display area of the display panel; the counting module counts the frame number of the display pictures in the display panel after starting up; the storage module stores first decoding data and second decoding data corresponding to the current frame when the count value of the counting module is equal to a preset value; at least one of the first time schedule controller and the second time schedule controller reads corresponding first decoding data or second decoding data from the storage module when the computer is started next time, and the corresponding first decoding data or second decoding data is used as corresponding first jitter data or second jitter data. Because each pixel in each frame of the video data has different gray scales and the random degree of each gray scale arrangement is higher, after the first decoding data of a certain frame in the storage module is used as the first jitter data or the second decoding data is used as the second jitter data, the randomness between the first jitter data and the second jitter data is higher, and after the jitter processing is carried out, the brightness difference of the pixels in the first display area and the second display area has randomness, so that the whole frame cannot have obvious color difference, and the display effect is better.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The foregoing describes in detail a driving method of a display device and the display device provided in the embodiments of the present application, and specific examples are applied herein to explain the principles and implementations of the present application, and the description of the foregoing embodiments is only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A driving method of a display device is characterized in that the display device comprises a display panel and a control panel electrically connected with the display panel, the control panel comprises a first time schedule controller, a second time schedule controller, a counting module and a storage module, the first time schedule controller comprises a first decoding module and a first shaking module, the second time schedule controller comprises a second decoding module and a second shaking module, and the driving method comprises the following steps:
the first decoding module decodes first display data corresponding to each frame of image in the first video data to obtain first decoded data, and the second decoding module decodes second display data corresponding to each frame of image in the second video data to obtain second decoded data;
the first dithering module is used for dithering the first decoding data based on a first dithering control table corresponding to first dithering data and inputting processed first pixel gray scale data into a first display area of the display panel, and the second dithering module is used for dithering the second decoding data based on a second dithering control table corresponding to second dithering data and inputting processed second pixel gray scale data into a second display area of the display panel;
the counting module counts the number of frames of the display pictures in the display panel after the display panel is started;
the storage module stores first decoding data and second decoding data corresponding to the current frame when the counting value of the counting module is equal to a preset value;
at least one of the first timing controller and the second timing controller reads the corresponding first decoded data or the second decoded data from the storage module when starting up next time, and uses the first decoded data or the second decoded data as the corresponding first jitter data or second jitter data.
2. The method for driving a display device according to claim 1, wherein the step of storing the first decoded data and the second decoded data corresponding to the current frame is followed by further comprising: and clearing the count value.
3. The method according to claim 1, wherein the step of reading the corresponding first decoded data or second decoded data from the memory module and using the read data as the corresponding first shaking data or second shaking data at a next power-on time by at least one of the first timing controller and the second timing controller comprises:
the first time schedule controller selects part of data from the first decoding data as first jitter data in a first selection mode, the second time schedule controller selects part of data from the second decoding data as second jitter data in a second selection mode, and the first selection mode is different from the second selection mode.
4. The method for driving the display device according to claim 1, wherein the counting module includes a first counting module provided in the first timing controller and a second counting module provided in the second timing controller, and the counting module counts the number of frames of the display screen in the display panel after power-on, including:
the first counting module counts the number of frames of the display pictures in the display panel after the display panel is started, and the second counting module counts the number of frames of the display pictures in the display panel after the display panel is started.
5. The method for driving a display device according to claim 4, wherein the step of storing the first decoded data and the second decoded data corresponding to the current frame by the storage module when the count value of the counting module is equal to a preset value comprises:
the storage module stores first decoding data corresponding to the current frame when a first count value of the first counting module is equal to a first preset value, and stores first decoding data corresponding to the current frame when a second count value of the second counting module is equal to a second preset value.
6. The method for driving a display device according to claim 5, wherein the step of storing the first decoded data corresponding to the current frame by the storage module when the first count value of the first counting module is equal to a first preset value, and storing the first decoded data corresponding to the current frame when the second count value of the second counting module is equal to a second preset value comprises: and setting the first preset value and the second preset value to be unequal.
7. A display device comprises a display panel and a control panel electrically connected with the display panel, and is characterized in that the control panel comprises:
the first timing controller comprises a first decoding module and a first dithering module, wherein the first decoding module is used for decoding first display data corresponding to each frame of image in first video data to obtain first decoding data, the first dithering module is used for dithering the first decoding data based on a first dithering control table corresponding to the first dithering data, and inputting processed first pixel gray scale data to a first display area of the display panel;
the second timing controller comprises a second decoding module and a second dithering module, the second decoding module is used for decoding second display data corresponding to each frame of image in second video data to obtain second decoded data, the second dithering module is used for dithering the second decoded data based on a second dithering control table corresponding to the second dithering data, and second pixel gray scale data obtained after the dithering is input into a second display area of the display panel;
the counting module is used for counting the number of frames of the display pictures in the display panel after the display panel is started;
the storage module is used for storing first decoding data and second decoding data corresponding to the current frame when the counting value of the counting module is equal to a preset value;
at least one of the first timing controller and the second timing controller is configured to read the corresponding first decoded data or the second decoded data from the storage module when the computer is started next time, and use the read first decoded data or the second decoded data as corresponding first jitter data or second jitter data.
8. The display device according to claim 7, wherein the counting module is further configured to clear the count value after the storage module completes storage of the first decoded data and the second decoded data corresponding to the current frame.
9. The display apparatus according to claim 7, wherein the first timing controller is configured to select a portion of the data from the first decoded data as first wobble data in a first selection manner, and the second timing controller is configured to select a portion of the data from the second decoded data as second wobble data in a second selection manner, the first selection manner being different from the second selection manner.
10. The display apparatus as claimed in claim 9, wherein the storage module is configured to store the first decoded data corresponding to the current frame when the first count value of the first counting module equals to a first preset value, and store the first decoded data corresponding to the current frame when the second count value of the second counting module equals to a second preset value.
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