CN110264969B - Display driving method and display device - Google Patents
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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
- 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
- G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- 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
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
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Abstract
The invention provides a display driving method and a display panel. The display driving method includes the steps of: step S1, providing a display panel; step S2, acquiring the original gray scale of each sub-pixel in the current frame picture; step S3, determining whether the current frame is a heavy-duty frame according to the original gray scale of each sub-pixel, if so, converting the original gray scale of each sub-pixel in the current frame according to a preset heavy-duty conversion algorithm to obtain a corrected gray scale of each sub-pixel, and driving each sub-pixel with the corrected gray scale to display the frame, otherwise, directly driving each sub-pixel with the original gray scale to display the frame. According to the invention, the original gray scales of the sub-pixels under the heavy-load picture are converted into the correction gray scales, so that the driving load can be reduced, the over-high temperature of the driving chip caused by the heavy-load picture is avoided, and the display quality is ensured.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display driving method and a display device.
Background
With the development of Display technology, flat panel Display devices such as Liquid Crystal Displays (LCDs) have advantages of high image quality, power saving, thin body, and wide application range, and thus are widely used in various consumer electronics products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, and desktop computers, and become the mainstream of Display devices.
The liquid crystal display panel comprises a plurality of sub-pixels arranged in an array manner, each sub-pixel is electrically connected with a Thin Film Transistor (TFT), a grid electrode (Gate) of the TFT is connected with a grid electrode scanning line in the horizontal direction, a Drain electrode (Drain) is connected with a data line in the vertical direction, and a Source electrode (Source) is connected with a pixel electrode. Applying sufficient voltage to the gate scan lines turns on all TFTs electrically connected to the gate scan lines, so that the signal voltage on the data lines can be written into the pixels, controlling the transmittance of the liquid crystal, and achieving the display effect.
With the continuous pursuit of the display quality of the lcd panel, the lcd panel with clearer image quality (8K) and faster refresh rate (120Hz) has become a new trend. However, for the lcd panel with 8K or higher resolution, which means more pixels to be driven, if the conventional 1G1D pixel architecture is adopted, the charging time of each pixel is doubled relative to the 4K panel; in addition, the demand for faster refresh rates further reduces the charging time of the pixels, thereby causing a series of image quality problems.
In order to solve the problem of short charging time, an architecture of halving scanning Data and doubling (Half Gate 2Data, HG2D) is proposed, that is, an architecture HG2D is that during scanning, two adjacent rows of sub-pixels scan simultaneously, and the number of Data lines is doubled, that is, each column of sub-pixels is provided with two Data lines, and two rows of sub-pixels scanned simultaneously in the same column of sub-pixels are respectively connected to two Data corresponding to the column of sub-pixels, so that the charging time is doubled, and the charging effect is ensured; however, the number of pixels in the high-resolution panel is several times that of the common panel, and under a heavy-duty picture, namely when the low gray scale and the gray scale are frequently switched, the driving chip is frequently charged and discharged to a large extent, so that the temperature of the driving chip is rapidly increased, and finally the driving chip is overloaded and cannot normally work, and the power consumption is very large; at present, the problem of overhigh temperature of a driving chip under a heavy-load picture is mainly solved by adding a radiating fin, but the increase of the radiating fin undoubtedly causes the increase of cost and has a quite complex structure;
disclosure of Invention
The invention aims to provide a display driving method, which solves the problem that the temperature of a driving chip is too high under a heavy-load picture.
The invention also aims to provide a display device, which solves the problem that the temperature of a driving chip is too high under a heavy-load picture.
To achieve the above object, the present invention provides a display driving method, comprising the steps of:
step S1, providing a display panel, where the display panel includes a plurality of scan lines, a plurality of data lines, and a plurality of sub-pixels, the plurality of sub-pixels are arranged in an array, a scan line electrically connected to a row of sub-pixels is provided corresponding to each row of sub-pixels, and two data lines are provided corresponding to each column of sub-pixels;
every two adjacent rows of sub-pixels are a driving group, two scanning lines electrically connected with the two rows of sub-pixels in the same driving group receive the same scanning signal, one of the two sub-pixels adjacent in the column direction in the same driving group is electrically connected with one data line corresponding to the sub-pixel in the column where the two sub-pixels are located, and the other one of the two sub-pixels is electrically connected with the other data line corresponding to the sub-pixel in the column where the two sub-pixels are located;
step S2, acquiring the original gray scale of each sub-pixel in the current frame picture;
step S3, determining whether the current frame is a heavy-duty frame according to the original gray scale of each sub-pixel, if so, converting the original gray scale of each sub-pixel in the current frame according to a preset heavy-duty conversion algorithm to obtain a corrected gray scale of each sub-pixel, and driving each sub-pixel with the corrected gray scale to display the frame, otherwise, directly driving each sub-pixel with the original gray scale to display the frame.
In step S3, when the original gray scales of the two rows of sub-pixels of one of the two adjacent driving groups are both greater than the first gray scale, the original gray scales of the two rows of sub-pixels of the other driving group are both less than the second gray scale, and the first gray scale is greater than the second gray scale, it is determined that the current frame is a heavy-load frame, otherwise, it is determined that the current frame is a non-heavy-load frame.
The sub-pixels in the odd-numbered rows in the sub-pixels in the same row are electrically connected with one data line corresponding to the sub-pixels in the row, and the sub-pixels in the even-numbered rows in the sub-pixels in the same row are electrically connected with the other data line corresponding to the sub-pixels in the row.
The preset reloading conversion algorithm specifically comprises the following steps:
calculating the comparison gray scale of each sub-pixel, wherein the calculation formula of the comparison gray scale is as follows:
XG(i，j)＝(YG(i，j)+YG(i+2，j))/2；
wherein XG(i，j)Is the comparison gray level, YG, of the ith row and the jth column sub-pixel in the current frame(i，j)Is the original gray level of the ith row and jth column sub-pixel in the current frame, YG(i+2，j)The gray scale of the sub-pixel of the ith +2 th row and the jth column in the current frame picture is the original gray scale, i and j are positive integers, and the sub-pixel of the ith row and the sub-pixel of the (i + 1) th row are in the same driving group;
calculating the weight complement value of each sub-pixel, wherein the calculation formula of the weight complement value is as follows:
Δ＝(Δ1+Δ2+Δ3+Δ4+Δ5+Δ6)/6；
wherein, Δ is the weight complement value of the jth sub-pixel in the ith row and the jth column of the (i + 1) th row and the jth column of the sub-pixel;
Δ1＝∣YG(i，j)-YG(i+2，j)∣，Δ2＝∣YG(i+1，j)-YG(i+3，j)∣；
Δ3＝∣YG(i，j+1)-YG(i+2，j+1)∣，Δ4＝∣YG(i+1，j+1)-YG(i+3，j+1)∣；
Δ5＝∣YG(i，j+2)-YG(i+2，j+2)∣，Δ6＝∣YG(i+1，j+2)-YG(i+3，j+2)∣；
the YG(i+1，j)、YG(i+3，j)、YG(i，j+1)、YG(i+2，j+1)、YG(i+1，j+1)、YG(i+3，j+1)、YG(i，j+2)、YG(i+2，j+2)、YG(i+1，j+2)And YG(i+3，j+2)The original gray scales of the sub-pixel (30) in the j th row of the (i + 1) th row, the j th row of the (i + 3) th row, the j +1 th row of the (i + 1) th row, the j +1 th row of the (i + 2) th row, the j +1 th row of the (i + 1) th row, the j +1 th row of the (i + 3) th row, the j +2 th row of the (i + 2) th row, the j +2 th row of the (i + 1) th row and the j +2 th row of the (i + 3) th row are respectively;
determining the correction weight of each sub-pixel according to the weight complement value of each sub-pixel and a preset weight lookup table;
comparing the comparison gray scale of each sub-pixel with the original gray scale, if the comparison gray scale is greater than or equal to the original gray scale, calculating the correction gray scale of the sub-pixel by using formula 1, otherwise, calculating the correction gray scale of the sub-pixel by using formula 2;
MG(i，j)＝YG(i，j)+ratio×(XG(i，j)-YG(i，j)) Formula 1;
MG(i，j)＝YG(i，j)-ratio×(YG(i，j)-XG(i，j)) Formula 2;
wherein, MG(i，j)The ratio is the correction gray scale of the ith row and jth column sub-pixel (30), and the ratio is the correction weight of the ith row and jth column sub-pixel.
The sub-pixels in the j (th) column, the j (th) column +1 and the j (th) column +2 are respectively a blue sub-pixel, a green sub-pixel and a red sub-pixel.
The 4n-3 th column and the 4n-1 th column of sub-pixels in the same row of sub-pixels are electrically connected with one data line corresponding to the row of sub-pixels, the 4n-2 th column and the 4n-1 th column of sub-pixels are electrically connected with the other data line corresponding to the row of sub-pixels, and n is a positive integer.
The preset reloading conversion algorithm specifically comprises the following steps:
calculating the comparison gray scale of each sub-pixel, wherein the calculation formula of the comparison gray scale is as follows:
XG(i，j)＝(YG(i，j)+YG(k，j))/2；
wherein XG(i，j)Is the comparison gray level, YG, of the ith row and the jth column sub-pixel in the current frame(i，j)Is the original gray level of the ith row and jth column sub-pixel in the current frame, YG(k，j)For the original gray scale of the jth sub-pixel of the kth row in the current frame, i, j and k are all positive integers, and when i is 4n-3, k is i +3, and when i is 4n-2, k is i +1, and the ith row sub-pixel and the ith +1 th row sub-pixel are in the same driving group;
calculating the weight complement value of each sub-pixel, wherein the calculation formula of the weight complement value is as follows:
Δ＝(Δ1+Δ2+Δ3+Δ4+Δ5+Δ6)/6；
wherein, Δ is the weight complement value of the jth sub-pixel in the ith row and the jth column of the (i + 1) th row and the jth column of the sub-pixel;
Δ1＝∣YG(i，j)-YG(i+3，j)∣，Δ2＝∣YG(i+1，j)-YG(i+2，j)∣；
Δ3＝∣YG(i，j+1)-YG(i+3，j+1)∣，Δ4＝∣YG(i+1，j+1)-YG(i+2，j+1)∣；
Δ5＝∣YG(i，j+2)-YG(i+3，j+2)∣，Δ6＝∣YG(i+1，j+2)-YG(i+2，j+2)∣；
the YG(i+1，j)、YG(i+3，j)、YG(i，j+1)、YG(i+2，j+1)、YG(i+1，j+1)、YG(i+3，j+1)、YG(i，j+2)、YG(i+2，j+2)、YG(i+1，j+2)And YG(i+3，j+2)The original gray scales of the sub-pixels of the jth row of the (i + 1) th row, the jth row of the (i + 3) th row, the jth +1 column of the ith row, the jth +1 row of the (i + 2) th row, the jth +1 column of the (i + 1) th row, the jth +1 column of the (i + 3) th row, the jth +2 column of the ith row, the jth +2 column of the (i + 2) th row, the jth +1 row, the jth +2 column of the (i + 3) th row and the jth +2 column of the (i + 2);
determining the correction weight of each sub-pixel according to the weight complement value of each sub-pixel and a preset weight lookup table;
comparing the comparison gray scale of each sub-pixel with the original gray scale, if the comparison gray scale is greater than or equal to the original gray scale, calculating the correction gray scale of the sub-pixel by using formula 3, otherwise, calculating the correction gray scale of the sub-pixel by using formula 4;
MG(i，j)＝YG(i，j)+ratio×(XG(i，j)-YG(i，j)) Formula 3;
MG(i，j)＝YG(i，j)-ratio×(YG(i，j)-XG(i，j)) Formula 4;
wherein, MG(i，j)The ratio is the correction gray scale of the ith row and jth column sub-pixel, and the ratio is the correction weight of the ith row and jth column sub-pixel.
The sub-pixels in the j (th) column, the j (th) column +1 and the j (th) column +2 are respectively a blue sub-pixel, a green sub-pixel and a red sub-pixel.
The difference value between the first gray scale and the second gray scale is more than 200.
The invention also provides a display device which is driven by adopting the display driving method.
The invention has the beneficial effects that: the invention provides a display driving method, which comprises the following steps: step S1, providing a display panel; step S2, acquiring the original gray scale of each sub-pixel in the current frame picture; step S3, judging whether the current frame picture is a heavy-load picture according to the original gray scale of each sub-pixel, if so, converting the original gray scale of each sub-pixel in the current frame picture according to a preset heavy-load conversion algorithm to obtain the corrected gray scale of each sub-pixel, and driving each sub-pixel to display the picture by the corrected gray scale, otherwise, directly driving each sub-pixel to display the picture by the original gray scale, and by converting the original gray scale of each sub-pixel under the heavy-load picture into the corrected gray scale, the driving load can be reduced, the phenomenon that the temperature of a driving chip is overhigh due to the heavy-load picture is avoided, and the display quality is ensured. The invention also provides a display device, which can avoid the over-high temperature of the driving chip caused by the heavy-load picture and ensure the display quality.
Drawings
For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the invention.
In the drawings, there is shown in the drawings,
FIG. 1 is a flow chart of a display driving method according to the present invention;
FIG. 2 is a diagram illustrating a first embodiment of step S1 of the display driving method according to the present invention;
fig. 3 is a schematic diagram of the first embodiment of step S2 of the display driving method according to the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Referring to fig. 1, the present invention provides a display driving method, including the following steps:
step S1, as shown in fig. 2 or fig. 3, provides a display panel, which is an HG2D display panel.
Specifically, the display panel includes a plurality of scan lines 10, a plurality of data lines 20 and a plurality of sub-pixels 30, the plurality of sub-pixels 30 are arranged in an array, one scan line 10 electrically connected to each row of sub-pixels 30 is disposed corresponding to each row of sub-pixels 30, and two data lines 20 are disposed corresponding to each column of sub-pixels 30;
every two adjacent rows of sub-pixels 30 are a driving group 40, two scanning lines 10 electrically connected to two rows of sub-pixels 30 in the same driving group 40 receive the same scanning signal, one of the two sub-pixels 30 adjacent to each other in the column direction in the same driving group 40 is electrically connected to one data line 20 corresponding to the sub-pixel 30 in the column where the one sub-pixel is located, and the other is electrically connected to the other data line 20 corresponding to the sub-pixel 30 in the column where the other sub-pixel is located.
Further, as shown in fig. 2 or fig. 3, a data line 20 is correspondingly disposed on each of the left and right sides of each column of sub-pixels 30.
Preferably, in the first embodiment of the present invention, the sub-pixels 30 in the odd-numbered rows in the same row of sub-pixels 30 are electrically connected to one data line 20 corresponding to the row of sub-pixels 30, the sub-pixels 30 in the even-numbered rows in the same row of sub-pixels 30 are electrically connected to the other data line 20 corresponding to the row of sub-pixels 30, the sub-pixels 30 in the odd-numbered rows shown in fig. 2 are electrically connected to the data line 20 on the left side of the row, and the sub-pixels 30 in the even-numbered rows are electrically connected to the data line 20 on the right side of the row.
Preferably, in the second embodiment of the present invention, the sub-pixels 30 in the 4n-3 th row and the 4n-1 th row in the same row of sub-pixels are electrically connected to one data line 20 corresponding to the row of sub-pixels 30, the sub-pixels 30 in the 4n-2 th row and the 4n-1 th row are electrically connected to the other data line 20 corresponding to the row of sub-pixels 30, n is a positive integer, and corresponds to the embodiment shown in fig. 3, in which the sub-pixels 30 in the 4n-3 th row and the 4n-1 th row are both electrically connected to the data line 20 on the left side of the row, and the sub-pixels 30 in the 4n-2 th row and the 4n-1 th row are both electrically connected to the data line 20 on the right side of the row.
Further, in the first and second embodiments of the present invention, the sub-pixels 30 in the same column have the same color, and the sub-pixels 30 in the same row are sequentially and repeatedly arranged in the order of blue, green, and red sub-pixels.
Step S2, the original gray scale of each sub-pixel 30 in the current frame picture is obtained.
Step S3, determining whether the current frame is a heavy-duty frame according to the original gray scale of each sub-pixel 30, if so, converting the original gray scale of each sub-pixel 30 in the current frame according to a preset heavy-duty conversion algorithm to obtain a corrected gray scale of each sub-pixel 30, and driving each sub-pixel 30 with the corrected gray scale to display the frame, otherwise, directly driving each sub-pixel 30 with the original gray scale to display the frame.
Specifically, in step S3, when the original gray scales of the two rows of sub-pixels 30 of one driving group 40 of the two adjacent driving groups 40 are both greater than the first gray scale, the original gray scales of the two rows of sub-pixels 30 of the other driving group 40 are both less than the second gray scale, and the first gray scale is greater than the second gray scale, the current frame is determined as the heavy-load frame, otherwise, the current frame is determined as the non-heavy-load frame.
Preferably, the difference between the first gray scale and the second gray scale is greater than 200.
For example, when the original gray levels of the two rows of sub-pixels 30 in the first driving group 40 are both 0, the original gray levels of the two rows of sub-pixels 30 in the second driving group 40 are both 255, and the first driving group 40 and the second driving group 40 are adjacent, it is determined that the current frame is the reloaded frame.
Preferably, as shown in fig. 2, in the first embodiment of the present invention, the preset reload switching algorithm specifically includes:
calculating the comparative gray scale of each sub-pixel 30, wherein the calculation formula of the comparative gray scale is as follows:
XG(i，j)＝(YG(i，j)+YG(i+2，j))/2；
wherein XG(i，j)Is the comparison gray scale, YG, of the ith row and the jth column sub-pixel 30 in the current frame(i，j)Is the original gray level, YG, of the ith row and the jth column sub-pixel 30 in the current frame(i+2，j)The original gray scale of the sub-pixel 30 in the (i + 2) th row and the jth column in the current frame picture is shown, i and j are positive integers, and the sub-pixel 30 in the ith row and the sub-pixel 30 in the (i + 1) th row are in the same driving group 40;
calculating the weight complement value of each sub-pixel 30, wherein the calculation formula of the weight complement value is as follows:
Δ＝(Δ1+Δ2+Δ3+Δ4+Δ5+Δ6)/6；
wherein Δ is the complementary value of the ith row and jth column of sub-pixels 30 and the (i + 1) th row and jth column of sub-pixels 30;
Δ1＝∣YG(i，j)-YG(i+2，j)∣，Δ2＝∣YG(i+1，j)-YG(i+3，j)∣；
Δ3＝∣YG(i，j+1)-YG(i+2，j+1)∣，Δ4＝∣YG(i+1，j+1)-YG(i+3，j+1)∣；
Δ5＝∣YG(i，j+2)-YG(i+2，j+2)∣，Δ6＝∣YG(i+1，j+2)-YG(i+3，j+2)∣；
the YG(i+1，j)、YG(i+3，j)、YG(i，j+1)、YG(i+2，j+1)、YG(i+1，j+1)、YG(i+3，j+1)、YG(i，j+2)、YG(i+2，j+2)、YG(i+1，j+2)And YG(i+3，j+2)The original gray levels of the sub-pixels 30 in the jth row of the (i + 1) th row, the jth row of the (i + 3) th row, the jth column of the ith row, the jth +1 row of the (i + 2) th row, the jth +1 row of the (i + 1) th row, the jth +1 column of the (i + 3) th row, the jth +2 column of the ith row, the jth +2 column of the (i + 2) th row, the jth +1 row, the jth +2 column of the (i + 3) th row and the jth +2 column of the (i + 2) th row;
determining the correction weight of each sub-pixel 30 according to the weight complement value of each sub-pixel 30 and a preset weight lookup table;
comparing the comparison gray scale of each sub-pixel 30 with the original gray scale, if the comparison gray scale is greater than or equal to the original gray scale, calculating the correction gray scale of the sub-pixel 30 by equation 1, otherwise calculating the correction gray scale of the sub-pixel 30 by equation 2;
MG(i，j)＝YG(i，j)+ratio×(XG(i，j)-YG(i，j)) Formula 1;
MG(i，j)＝YG(i，j)-ratio×(YG(i，j)-XG(i，j)) Formula 2;
wherein, MG(i，j)The ratio is the correction gray scale of the ith row and jth column of sub-pixels 30, and the ratio is the correction weight of the ith row and jth column of sub-pixels 30.
In the first embodiment of the present invention, the sub-pixels 30 in the j-th, j + 1-th and j + 2-th columns are respectively a blue sub-pixel, a green sub-pixel and a red sub-pixel.
The specific conversion process of the reloading conversion algorithm in the first embodiment of the invention is described by taking the row 1, column 1 sub-pixel 30 and the row 2, column 1 sub-pixel 30 as examples:
calculating the comparison gray scale of the sub-pixel 30 in the 1 st row and the 1 st column 30 in the 1 st row and the 2 nd column 30, wherein the calculation formula of the comparison gray scale is as follows:
XG(1，1)＝(YG(1，1)+YG(3，1))/2；
XG(2，1)＝(YG(2，1)+YG(4，1))/2；
calculating the weight complement value of the sub-pixel 30 at the 1 st row and the 1 st column 30 at the 1 st row and the 2 nd row, the calculation formula of the weight complement value is:
Δ＝(Δ1+Δ2+Δ3+Δ4+Δ5+Δ6)/6；
Δ1＝∣YG(1，1)-YG(3，1)∣，Δ2＝∣YG(2，1)-YG(4，1)∣；
Δ3＝∣YG(1，2)-YG(3，2)∣，Δ4＝∣YG(2，2)-YG(4，2)∣；
Δ5＝∣YG(1，3)-YG(3，3)∣，Δ6＝∣YG(2，3)-YG(4，3)∣；
determining correction weight ratios of the row 1, column 1 sub-pixel 30 and the row 2, column 1 sub-pixel 30 according to the weight complement values of the row 1, column 1 sub-pixel 30 and the row 2, column 1 sub-pixel 30 and a preset weight lookup table;
comparing the comparison gray levels of the respective sub-pixels 30 with the original gray levels;
if the comparison gray scale is greater than or equal to the original gray scale, then
MG(1，1)＝YG(1，1)+ratio×(XG(1，1)-YG(1，1))；
MG(2，1)＝YG(2，1)+ratio×(XG(2，1)-YG(2，1))；
If the comparison gray scale is smaller than the original gray scale, then
MG(1，1)＝YG(1，1-ratio×(YG(1，1)-XG(1，1))；
MG(2，1)＝YG(2，1)-ratio×(YG(2，1)-XG(2，1))。
Specifically, as shown in fig. 3, in the second embodiment of the present invention, the preset reload switching algorithm specifically includes:
calculating the comparison gray scale of each sub-pixel (30), wherein the calculation formula of the comparison gray scale is as follows:
XG(i，j)＝(YG(i，j)+YG(k，j))/2；
wherein XG(i，j)Is the comparative gray scale of the sub-pixel (30) of the ith row and the jth column in the current frame picture, YG(i，j)Is the original gray level of the ith row and jth column sub-pixel (30) in the current frame picture, YG(k，j)For the original gray scale of the jth sub-pixel (30) in the kth row and the jth column in the current frame, i, j and k are all positive integers, and when i is 4n-3, k is i +3, and when i is 4n-2, k is i +1, and the ith row sub-pixel 30 and the (i + 1) th row sub-pixel 30 are in the same driving group 40;
calculating the weight complement value of each sub-pixel 30, wherein the calculation formula of the weight complement value is as follows:
Δ＝(Δ1+Δ2+Δ3+Δ4+Δ5+Δ6)/6；
wherein Δ is the complementary value of the ith row and jth column of sub-pixels 30 and the (i + 1) th row and jth column of sub-pixels 30;
Δ1＝∣YG(i，j)-YG(i+3，j)∣，Δ2＝∣YG(i+1，j)-YG(i+2，j)∣；
Δ3＝∣YG(i，j+1)-YG(i+3，j+1)∣，Δ4＝∣YG(i+1，j+1)-YG(i+2，j+1)∣；
Δ5＝∣YG(i，j+2)-YG(i+3，j+2)∣，Δ6＝∣YG(i+1，j+2)-YG(i+2，j+2)∣；
the YG(i+1，j)、YG(i+3，j)、YG(i，j+1)、YG(i+2，j+1)、YG(i+1，j+1)、YG(i+3，j+1)、YG(i，j+2)、YG(i+2，j+2)、YG(i+1，j+2)And YG(i+3，j+2)The original gray of the sub-pixel 30 of the jth column of the (i + 1) th row, the jth column of the (i + 3) th row, the jth +1 column of the ith row, the jth +1 row of the (i + 2) th row, the jth +1 column of the (i + 1) th row, the jth +1 column of the (i + 3) th row, the jth +2 column of the ith row, the jth +2 column of the (i + 2) th row, the jth +1 column of the (i + 3) th row and the jth +2 column of the (i + 3) th rowStep (2);
determining the correction weight of each sub-pixel 30 according to the weight complement value of each sub-pixel 30 and a preset weight lookup table;
comparing the comparison gray scale of each sub-pixel 30 with the original gray scale, if the comparison gray scale is greater than or equal to the original gray scale, calculating the correction gray scale of the sub-pixel 30 by formula 3, otherwise calculating the correction gray scale of the sub-pixel 30 by formula 4;
MG(i，j)＝YG(i，j)+ratio×(XG(i，j)-YG(i，j)) Formula 3;
MG(i，j)＝YG(i，j)-ratio×(YG(i，j)-XG(i，j)) Formula 4;
wherein, MG(i，j)The ratio is the correction gray scale of the ith row and jth column of sub-pixels 30, and the ratio is the correction weight of the ith row and jth column of sub-pixels 30.
The specific conversion process of the reloading conversion algorithm in the second embodiment of the invention is described by taking the row 1, column 1 sub-pixel 30 and the row 2, column 1 sub-pixel 30 as examples:
calculating the comparison gray scale of the sub-pixel 30 in the 1 st row and the 1 st column 30 in the 1 st row and the 2 nd column 30, wherein the calculation formula of the comparison gray scale is as follows:
XG(1，1)＝(YG(1，1)+YG(4，1))/2；
XG(2，1)＝(YG(2，1)+YG(3，1))/2；
calculating the weight complement value of the sub-pixel 30 at the 1 st row and the 1 st column 30 at the 1 st row and the 2 nd row, the calculation formula of the weight complement value is:
Δ＝(Δ1+Δ2+Δ3+Δ4+Δ5+Δ6)/6；
Δ1＝∣YG(1，1)-YG(4，1)∣，Δ2＝∣YG(2，1)-YG(3，1)∣；
Δ3＝∣YG(1，2)-YG(4，2)∣，Δ4＝∣YG(2，2)-YG(3，2)∣；
Δ5＝∣YG(1，3)-YG(4，3)∣，Δ6＝∣YG(2，3)-YG(3，3)∣；
determining correction weight ratios of the row 1, column 1 sub-pixel 30 and the row 2, column 1 sub-pixel 30 according to the weight complement values of the row 1, column 1 sub-pixel 30 and the row 2, column 1 sub-pixel 30 and a preset weight lookup table;
comparing the comparison gray levels of the respective sub-pixels 30 with the original gray levels;
if the comparison gray scale is greater than or equal to the original gray scale, then
MG(1，1)＝YG(1，1)+ratio×(XG(1，1)-YG(1，1))；
MG(2，1)＝YG(2，1)+ratio×(XG(2，1)-YG(2，1))；
If the comparison gray scale is smaller than the original gray scale, then
MG(1，1)＝YG(1，1)-ratio×(YG(1，1)-XG(1，1))；
MG(2，1)＝YG(2，1)-ratio×(YG(2，1)-XG(2，1))。
Therefore, the invention can reduce the driving load by converting the original gray scale of each sub-pixel under the heavy-load picture into the correction gray scale, avoid the overhigh temperature of the driving chip caused by the heavy-load picture and ensure the display quality.
In addition, the invention also provides a display device which is driven by adopting the display driving method. .
In summary, the present invention provides a display driving method, which includes the following steps: step S1, providing a display panel; step S2, acquiring the original gray scale of each sub-pixel in the current frame picture; step S3, judging whether the current frame picture is a heavy-load picture according to the original gray scale of each sub-pixel, if so, converting the original gray scale of each sub-pixel in the current frame picture according to a preset heavy-load conversion algorithm to obtain the corrected gray scale of each sub-pixel, and driving each sub-pixel to display the picture by the corrected gray scale, otherwise, directly driving each sub-pixel to display the picture by the original gray scale, and by converting the original gray scale of each sub-pixel under the heavy-load picture into the corrected gray scale, the driving load can be reduced, the phenomenon that the temperature of a driving chip is overhigh due to the heavy-load picture is avoided, and the display quality is ensured. The invention also provides a display device, which can avoid the over-high temperature of the driving chip caused by the heavy-load picture and ensure the display quality.
As described above, it will be apparent to those skilled in the art that other various changes and modifications may be made based on the technical solution and concept of the present invention, and all such changes and modifications are intended to fall within the scope of the appended claims.
Claims (7)
1. A display driving method, comprising the steps of:
step S1, providing a display panel, where the display panel includes a plurality of scan lines (10), a plurality of data lines (20), and a plurality of sub-pixels (30), the plurality of sub-pixels (30) are arranged in an array, one scan line (10) electrically connected to each row of sub-pixels (30) is disposed corresponding to each row of sub-pixels (30), and two data lines (20) are disposed corresponding to each column of sub-pixels (30);
every two adjacent rows of sub-pixels (30) are a driving group (40), two scanning lines (10) which are electrically connected with two rows of sub-pixels (30) in the same driving group (40) receive the same scanning signal, one of the two sub-pixels (30) which are adjacent in the column direction in the same driving group (40) is electrically connected with one data line (20) corresponding to the sub-pixel (30) in the column where the two sub-pixels are located, and the other one is electrically connected with the other data line (20) corresponding to the sub-pixel (30) in the column where the two sub-pixels are located;
step S2, acquiring the original gray scale of each sub-pixel (30) in the current frame picture;
step S3, judging whether the current frame picture is a heavy-load picture according to the original gray scale of each sub-pixel (30), if so, converting the original gray scale of each sub-pixel (30) in the current frame picture according to a preset heavy-load conversion algorithm to obtain the corrected gray scale of each sub-pixel (30), and driving each sub-pixel (30) to display the picture by the corrected gray scale, otherwise, directly driving each sub-pixel (30) to display the picture by the original gray scale;
in the step S3, when the original gray scales of the two rows of sub-pixels (30) of one driving group (40) of the two adjacent driving groups (40) are both greater than the first gray scale, the original gray scales of the two rows of sub-pixels (30) of the other driving group (40) are both less than the second gray scale, and the first gray scale is greater than the second gray scale, it is determined that the current frame is a heavy-load frame, otherwise, it is determined that the current frame is a non-heavy-load frame;
the sub-pixels (30) in the odd rows in the same row of sub-pixels (30) are electrically connected with one data line (20) corresponding to the row of sub-pixels (30), and the sub-pixels (30) in the even rows in the same row of sub-pixels (30) are electrically connected with the other data line (20) corresponding to the row of sub-pixels (30);
the preset reloading conversion algorithm specifically comprises the following steps:
calculating the comparison gray scale of each sub-pixel (30), wherein the calculation formula of the comparison gray scale is as follows:
XG(i，j)＝(YG(i，j)+YG(i+2，j))/2；
wherein XG(i，j)Is the comparative gray scale of the sub-pixel (30) of the ith row and the jth column in the current frame picture, YG(i，j)Is the original gray level of the ith row and jth column sub-pixel (30) in the current frame picture, YG(i+2，j)The original gray scale of a sub-pixel (30) in the (i + 2) th row and the jth column in a current frame picture is shown, i and j are positive integers, and the sub-pixel (30) in the ith row and the sub-pixel (30) in the (i + 1) th row are in the same driving group (40);
calculating a weight complement value of each sub-pixel (30), wherein the calculation formula of the weight complement value is as follows:
Δ＝(Δ1+Δ2+Δ3+Δ4+Δ5+Δ6)/6；
wherein, Delta is the weight complement value of the ith row and jth column sub-pixel (30) and the (i + 1) th row and jth column sub-pixel (30);
Δ1＝∣YG(i，j)-YG(i+2，j)∣，Δ2＝∣YG(i+1，j)-YG(i+3，j)∣；
Δ3＝∣YG(i，j+1)-YG(i+2，j+1)∣，Δ4＝∣YG(i+1，j+1)-YG(i+3，j+1)∣；
Δ5＝∣YG(i，j+2)-YG(i+2，j+2)∣，Δ6＝∣YG(i+1，j+2)-YG(i+3，j+2)∣；
the YG(i+1，j)、YG(i+3，j)、YG(i，j+1)、YG(i+2，j+1)、YG(i+1，j+1)、YG(i+3，j+1)、YG(i，j+2)、YG(i+2，j+2)、YG(i+1，j+2)And YG(i+3，j+2)The original gray scales of the sub-pixel (30) in the j th row of the (i + 1) th row, the j th row of the (i + 3) th row, the j +1 th row of the (i + 1) th row, the j +1 th row of the (i + 2) th row, the j +1 th row of the (i + 1) th row, the j +1 th row of the (i + 3) th row, the j +2 th row of the (i + 2) th row, the j +2 th row of the (i + 1) th row and the j +2 th row of the (i + 3) th row are respectively;
determining the correction weight of each sub-pixel (30) according to the weight complement value of each sub-pixel (30) and a preset weight lookup table;
comparing the comparison gray scale of each sub-pixel (30) with the original gray scale, if the comparison gray scale is greater than or equal to the original gray scale, calculating the correction gray scale of the sub-pixel (30) by using formula 1, otherwise, calculating the correction gray scale of the sub-pixel (30) by using formula 2;
MG(i，j)＝YG(i，j)+ratio×(XG(i，j)-YG(i，j)) Formula 1;
MG(i，j)＝YG(i，j)-ratio×(YG(i，j)-XG(i，j)) Formula 2;
wherein, MG(i，j)The ratio is the correction gray scale of the ith row and jth column sub-pixel (30), and the ratio is the correction weight of the ith row and jth column sub-pixel (30).
2. The display driving method according to claim 1, wherein the sub-pixels (30) in the j-th, j +1 and j +2 columns are respectively blue, green and red sub-pixels.
3. The display driving method according to claim 1, wherein a difference between the first gray scale and the second gray scale is greater than 200.
4. A display driving method, comprising the steps of:
step S1, providing a display panel, where the display panel includes a plurality of scan lines (10), a plurality of data lines (20), and a plurality of sub-pixels (30), the plurality of sub-pixels (30) are arranged in an array, one scan line (10) electrically connected to each row of sub-pixels (30) is disposed corresponding to each row of sub-pixels (30), and two data lines (20) are disposed corresponding to each column of sub-pixels (30);
every two adjacent rows of sub-pixels (30) are a driving group (40), two scanning lines (10) which are electrically connected with two rows of sub-pixels (30) in the same driving group (40) receive the same scanning signal, one of the two sub-pixels (30) which are adjacent in the column direction in the same driving group (40) is electrically connected with one data line (20) corresponding to the sub-pixel (30) in the column where the two sub-pixels are located, and the other one is electrically connected with the other data line (20) corresponding to the sub-pixel (30) in the column where the two sub-pixels are located;
step S2, acquiring the original gray scale of each sub-pixel (30) in the current frame picture;
step S3, judging whether the current frame picture is a heavy-load picture according to the original gray scale of each sub-pixel (30), if so, converting the original gray scale of each sub-pixel (30) in the current frame picture according to a preset heavy-load conversion algorithm to obtain the corrected gray scale of each sub-pixel (30), and driving each sub-pixel (30) to display the picture by the corrected gray scale, otherwise, directly driving each sub-pixel (30) to display the picture by the original gray scale;
in the step S3, when the original gray scales of the two rows of sub-pixels (30) of one driving group (40) of the two adjacent driving groups (40) are both greater than the first gray scale, the original gray scales of the two rows of sub-pixels (30) of the other driving group (40) are both less than the second gray scale, and the first gray scale is greater than the second gray scale, it is determined that the current frame is a heavy-load frame, otherwise, it is determined that the current frame is a non-heavy-load frame;
the 4n-3 th row and the 4n-1 th row of sub-pixels (30) in the same row of sub-pixels are electrically connected with one data line (20) corresponding to the row of sub-pixels (30), the 4n-2 th row and the 4n-1 th row of sub-pixels (30) are electrically connected with the other data line (20) corresponding to the row of sub-pixels (30), and n is a positive integer;
the preset reloading conversion algorithm specifically comprises the following steps:
calculating the comparison gray scale of each sub-pixel (30), wherein the calculation formula of the comparison gray scale is as follows:
XG(i，j)＝(YG(i，j)+YG(k，j))/2；
wherein XG(i，j)Is the comparative gray scale of the sub-pixel (30) of the ith row and the jth column in the current frame picture, YG(i，j)Is the original gray level of the ith row and jth column sub-pixel (30) in the current frame picture, YG(k，j)The original gray scale of a sub-pixel (30) at the jth row and the jth column in the current frame picture is shown, i, j and k are positive integers, when i is 4n-3, k is i +3, when i is 4n-2, k is i +1, and the sub-pixel (30) at the ith row and the sub-pixel (30) at the ith +1 row are in the same driving group (40);
calculating a weight complement value of each sub-pixel (30), wherein the calculation formula of the weight complement value is as follows:
Δ＝(Δ1+Δ2+Δ3+Δ4+Δ5+Δ6)/6；
wherein, Delta is the weight complement value of the ith row and jth column sub-pixel (30) and the (i + 1) th row and jth column sub-pixel (30);
Δ1＝∣YG(i，j)-YG(i+3，j)∣，Δ2＝∣YG(i+1，j)-YG(i+2，j)∣；
Δ3＝∣YG(i，j+1)-YG(i+3，j+1)∣，Δ4＝∣YG(i+1，j+1)-YG(i+2，j+1)∣；
Δ5＝∣YG(i，j+2)-YG(i+3，j+2)∣，Δ6＝∣YG(i+1，j+2)-YG(i+2，j+2)∣；
the YG(i+1，j)、YG(i+3，j)、YG(i，j+1)、YG(i+2，j+1)、YG(i+1，j+1)、YG(i+3，j+1)、YG(i，j+2)、YG(i+2，j+2)、YG(i+1，j+2)And YG(i+3，j+2)The original gray scales of the sub-pixel (30) in the j th row of the (i + 1) th row, the j th row of the (i + 3) th row, the j +1 th row of the (i + 1) th row, the j +1 th row of the (i + 2) th row, the j +1 th row of the (i + 1) th row, the j +1 th row of the (i + 3) th row, the j +2 th row of the (i + 2) th row, the j +2 th row of the (i + 1) th row and the j +2 th row of the (i + 3) th row are respectively;
determining the correction weight of each sub-pixel (30) according to the weight complement value of each sub-pixel (30) and a preset weight lookup table;
comparing the comparison gray scale of each sub-pixel (30) with the original gray scale, if the comparison gray scale is greater than or equal to the original gray scale, calculating the correction gray scale of the sub-pixel (30) by using formula 3, otherwise, calculating the correction gray scale of the sub-pixel (30) by using formula 4;
MG(i，j)＝YG(i，j)+ratio×(XG(i，j)-YG(i，j)) Formula 3;
MG(i，j)＝YG(i，j)-ratio×(YG(i，j)-XG(i，j)) Formula 4;
wherein, MG(i，j)The ratio is the correction gray scale of the ith row and jth column sub-pixel (30), and the ratio is the correction weight of the ith row and jth column sub-pixel (30).
5. The display driving method according to claim 4, wherein the sub-pixels (30) in the j-th, j + 1-th and j + 2-th columns are respectively blue, green and red sub-pixels.
6. The display driving method according to claim 4, wherein a difference between the first gray scale and the second gray scale is larger than 200.
7. A display device characterized by being driven by the display driving method according to any one of claims 1 to 6.
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