CN114038379B - Sub-pixel starting sequence determination method, sub-pixel starting method and pixel driving circuit - Google Patents
Sub-pixel starting sequence determination method, sub-pixel starting method and pixel driving circuit Download PDFInfo
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Abstract
The embodiment of the invention provides a sub-pixel opening sequence determination method, a sub-pixel opening method and a pixel driving circuit, wherein the sub-pixel opening sequence determination method comprises the following steps: aiming at a sub-pixel in a specified pixel row of a display panel to be tested, acquiring vector coupling voltage generated in the next charging time by other sub-pixels in the same row due to the charging voltage of the sub-pixel in the current charging time; acquiring the starting sequence of each preset sub-pixel; for each preset sub-pixel opening sequence, calculating the horizontal crosstalk value of the pixels in the appointed pixel row under the preset sub-pixel opening sequence according to the opening sequence of each sub-pixel in the preset sub-pixel opening sequence and the vector coupling voltage; and selecting a target sub-pixel starting sequence according to the horizontal crosstalk value of the pixels under each preset sub-pixel starting sequence. The influence degree of the horizontal crosstalk can be evaluated through the calculated horizontal crosstalk value, and the horizontal crosstalk caused by the high refresh rate can be effectively improved through selecting the starting sequence of the target sub-pixels.
Description
Technical Field
The invention relates to the technical field of horizontal crosstalk of high-frequency display, in particular to a sub-pixel starting sequence determination method, a sub-pixel starting method and a pixel driving circuit.
Background
The high-frequency display is high-refresh rate screen display, the high-refresh rate screen is a display product with the picture refresh rate higher than 60HZ in 1 second, and the display product is applied to the field of electronic competition at the earliest, so that the competitive experience of a user can be optimized, the visual experience of the user is greatly improved, and the video impact of smooth experience is realized. In recent years, a high refresh rate screen has become an important choice for a mobile phone panel, and the refresh rate is from 90HZ to 120HZ and 140HZ, so that the mobile phone panel with the high refresh rate screen is touted by mobile phone game lovers, and the mobile phone panel with the high refresh rate screen has been expanded into a middle-end mobile phone.
However, with the increase of the refresh rate, the problem of display crosstalk occurs, so that the image quality of the display product is affected, and the viewing experience of the user is further affected, so that it is important how to reduce the problem of crosstalk caused by the high refresh rate.
Disclosure of Invention
The embodiment of the invention aims to provide a sub-pixel starting sequence determination method, a sub-pixel starting method and a pixel driving circuit, which are used for solving the problem of horizontal crosstalk of a display product with high refresh rate. The specific technical scheme is as follows:
in a first aspect, an embodiment of the present application provides a sub-pixel opening sequence determining method, including:
aiming at a sub-pixel in a specified pixel row of a display panel to be tested, acquiring vector coupling voltage generated in the next charging time by other sub-pixels in the same row due to the charging voltage of the sub-pixel in the current charging time;
acquiring the starting sequence of each preset sub-pixel;
for each preset sub-pixel opening sequence, calculating the horizontal crosstalk value of the pixels in the appointed pixel row under the preset sub-pixel opening sequence according to the opening sequence of each sub-pixel in the preset sub-pixel opening sequence and the vector coupling voltage;
and selecting a target sub-pixel starting sequence according to the horizontal crosstalk value of the pixels under each preset sub-pixel starting sequence.
In one possible implementation manner, the calculating, for each preset sub-pixel on sequence, the horizontal crosstalk value of the pixels in the specified pixel row under the preset sub-pixel on sequence according to the on sequence of each sub-pixel in the preset sub-pixel on sequence and the vector coupling voltage includes:
for each preset sub-pixel opening sequence, sequentially calculating vector sums of vector coupling voltages generated by sub-pixels in a designated pixel row under each charging time according to the opening sequence of each sub-pixel under a plurality of charging times of the preset sub-pixel opening sequence and the vector coupling voltage to obtain the coupling voltage sums of the sub-pixels under each charging time of the preset sub-pixel opening sequence;
for each pixel in a designated pixel row, respectively calculating the weighted sum of the coupling voltages of all the sub-pixels in the pixel under different preset sub-pixel starting sequences based on the coupling brightness weights of the sub-pixels with different colors, so as to obtain the brightness influence value of the pixel under each preset sub-pixel starting sequence;
for each preset sub-pixel opening sequence, determining the horizontal crosstalk value of the pixels under the preset sub-pixel opening sequence according to the brightness influence value of the pixels under the preset sub-pixel opening sequence.
In one possible implementation manner, the calculating, for each preset sub-pixel on sequence, the horizontal crosstalk value of the pixels in the specified pixel row under the preset sub-pixel on sequence according to the on sequence of each sub-pixel in the preset sub-pixel on sequence and the vector coupling voltage includes:
selecting a preset sub-pixel opening sequence to be analyzed currently from a plurality of preset sub-pixel opening sequences, wherein the preset sub-pixel opening sequence represents the opening sequence of each sub-pixel under a plurality of charging times;
calculating vector sums of vector coupling voltages generated by sub-pixels in a second pixel under the charging time due to the influence of the charging voltage of the last charging time of each sub-pixel in a specified pixel according to the preset sub-pixel starting sequence to be analyzed and the vector coupling voltage at present for each charging time, and obtaining the vector sums of the vector coupling voltages of the sub-pixels in the second pixel under the charging time, wherein the specified pixel comprises a first pixel, the second pixel and a third pixel; the first pixel, the second pixel and the third pixel are three adjacent pixels in the appointed pixel row, and the second pixel is positioned in the middle of the first pixel and the third pixel;
based on the coupling brightness weights of the preset sub-pixels with different colors, carrying out weighted summation on the coupling voltage sum of each sub-pixel in the second pixel under the preset sub-pixel starting sequence to be analyzed at present, and obtaining the brightness influence value of the second pixel under the preset sub-pixel starting sequence to be analyzed at present;
determining the horizontal crosstalk value of the pixel under the preset sub-pixel starting sequence to be analyzed according to the brightness influence value of the second pixel under the preset sub-pixel starting sequence to be analyzed;
returning to the execution step: and selecting a preset sub-pixel opening sequence to be analyzed currently from a plurality of preset sub-pixel opening sequences until the horizontal crosstalk value of the pixel under each preset sub-pixel opening sequence is obtained.
In one possible implementation manner, the selecting the target sub-pixel on sequence according to the horizontal crosstalk value of the pixel under each preset sub-pixel on sequence includes:
and selecting a preset sub-pixel starting sequence with the minimum horizontal crosstalk value from all preset sub-pixel starting sequences as a target sub-pixel starting sequence.
In one possible implementation manner, the selecting the target sub-pixel on sequence according to the horizontal crosstalk value of the pixel under each preset sub-pixel on sequence includes:
selecting a preset sub-pixel starting sequence with the minimum horizontal crosstalk value smaller than a preset crosstalk threshold value when different preset images are displayed from all preset sub-pixel starting sequences, and obtaining a filtered preset sub-pixel starting sequence;
and selecting a preset sub-pixel starting sequence with the minimum average value of horizontal crosstalk values when different preset images are displayed from the filtered preset sub-pixel starting sequence as a target sub-pixel starting sequence.
In a second aspect, an embodiment of the present application provides a subpixel turning-on method, where the method includes:
according to the target sub-pixel turn-on sequence determined by the sub-pixel turn-on sequence determining method according to any one of the first aspect, each sub-pixel is turned on in turn to display image data.
In one possible implementation manner, the R sub-pixel, the G sub-pixel, and the B sub-pixel in the same pixel are sequentially arranged in the same row, and the opening sequence of the target sub-pixels in the nth row of pixels is as follows: the starting sequence of the target sub-pixels of the (N+1) th row of pixels is as follows: g sub-pixel- & gtB sub-pixel- & gtR sub-pixel, wherein N is a positive integer.
In a third aspect, an embodiment of the present application provides a pixel driving circuit, configured to generate a subpixel driving signal according to a target subpixel on sequence determined by any one of the subpixel on sequence determining methods in the first aspect.
In a fourth aspect, an embodiment of the present application provides a display panel, where each sub-pixel is turned on according to the sub-pixel turning-on method described in the first aspect or the second aspect.
In a fifth aspect, embodiments of the present application provide a display, including the display panel of the fourth aspect.
The embodiment of the invention has the beneficial effects that:
the embodiment of the invention provides a sub-pixel starting sequence determination method, a sub-pixel starting method and a pixel driving circuit, wherein the sub-pixel starting sequence determination method comprises the following steps: aiming at a sub-pixel in a specified pixel row of a display panel to be tested, acquiring vector coupling voltage generated in the next charging time by other sub-pixels in the same row due to the charging voltage of the sub-pixel in the current charging time; acquiring the starting sequence of each preset sub-pixel; for each preset sub-pixel opening sequence, calculating the horizontal crosstalk value of the pixels in the appointed pixel row under the preset sub-pixel opening sequence according to the opening sequence of each sub-pixel in the preset sub-pixel opening sequence and the vector coupling voltage; and selecting a target sub-pixel starting sequence according to the horizontal crosstalk value of the pixels under each preset sub-pixel starting sequence. The influence of the sub-pixels in the designated pixel row on the next charging time caused by the charging voltage of the sub-pixels in the current charging time can be evaluated by acquiring the vector coupling voltage, the influence degree of the horizontal crosstalk can be evaluated by the calculated horizontal crosstalk value, and the horizontal crosstalk caused by high refresh rate can be effectively improved by selecting the starting sequence of the target sub-pixels, so that the image texture is improved.
Of course, it is not necessary for any one product or method of practicing the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and other embodiments may be obtained according to these drawings to those skilled in the art.
FIG. 1 is a schematic diagram of horizontal crosstalk in the related art;
FIG. 2 is a first schematic diagram of a horizontal crosstalk influencing mechanism in the related art;
FIG. 3 is a diagram showing the effect of refresh frequency on horizontal crosstalk in the related art;
fig. 4 is a first schematic diagram of a subpixel opening sequence determining method according to an embodiment of the present application;
FIG. 5 is a schematic diagram of the ratio of the coupling times under different sub-pixel turn-on sequences according to the embodiments of the present application;
FIG. 6 is a second schematic diagram of a subpixel opening sequence determination method according to an embodiment of the present application;
FIG. 7 is a schematic diagram of horizontal crosstalk values under different sub-pixel turn-on sequences according to an embodiment of the present application
Fig. 8 is a third schematic diagram of a subpixel opening order determining method according to an embodiment of the present application;
fig. 9 is a fourth schematic diagram of a subpixel opening order determining method according to an embodiment of the present application;
FIG. 10 is a schematic diagram of a sub-pixel circuit according to an embodiment of the present application;
FIG. 11 is a schematic diagram of the luminance-to-crosstalk luminance ratio of sub-pixels at the same coupling voltage according to the embodiment of the present application;
fig. 12 is a fifth schematic diagram of a subpixel opening order determining method according to an embodiment of the present application;
fig. 13 is a schematic diagram of horizontal crosstalk under different images according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, those of ordinary skill in the art will be able to devise all other embodiments that are obtained based on this application and are within the scope of the present invention.
The Crosstalk of the display screen (also called as cross talk, abbreviated as CT) refers to picture distortion caused by that a picture with other colors is arranged on a pure-color background picture, so that the brightness of adjacent areas is changed. As shown in fig. 1, in a solid-color screen having a gray level of L127, the horizontal CT and the vertical CT are generated when a black image is displayed in the middle area, and the brightness of the area adjacent to the middle area is changed, wherein the gray level is the color depth of the dot in the black-and-white image, generally ranging from 0 to 255, white is 255, and black is 0, and L127 is the gray level having the gray level of the middle value.
In this application, only horizontal crosstalk is discussed, and in order to facilitate understanding, the mechanism of horizontal crosstalk generation may be explained by using the principles of the communicating vessels, referring to fig. 2, and when water is injected into the central area, the water levels in the level 1 area and the level 2 area may be caused to change to different extents. Specifically, in the display screen, the uneven charging of the adjacent three horizontal pixels (the left, middle and right pixels of the same row) may cause the common voltage VCOM of the display screen to generate a coupling offset. In addition to the effect of the voltage, the crosstalk phenomenon is also affected by the refresh frequency, and referring to fig. 3, it is known that horizontal crosstalk becomes more and more serious as the refresh frequency of the display screen increases.
In order to reduce the horizontal crosstalk of the display screen, the embodiment of the present application provides a sub-pixel on sequence determining method, referring to fig. 4, including:
s1, aiming at a sub-pixel in a specified pixel row of a display panel to be tested, acquiring vector coupling voltage generated in the next charging time by other sub-pixels in the same row due to the charging voltage of the sub-pixel in the current charging time.
The display panel to be tested is a panel needing to determine the opening sequence of the sub-pixels, and the designated pixel row can be selected in a self-defined manner according to practical conditions, for example, the designated pixel row can be an nth row or an n+1th row, wherein N is a positive integer. In order to more clearly explain the technical scheme of the application, firstly, the pixel, the sub-pixel and the charging time are explained, one pixel is composed of three sub-pixels of R sub-pixel (red sub-pixel), G sub-pixel (green sub-pixel) and B sub-pixel (blue sub-pixel), and corresponding light rays are emitted through the combination of three colors of RGB. In the process of displaying a frame of image frames, each sub-pixel in the pixel is charged in sequence through the source electrode of the MOS tube, and the display of the frame of image frames is completed through three charging times. For example, for a specific pixel, the specific pixel needs to display yellow in an image frame, taking the sub-pixel on sequence as RGB as an example, charging an R sub-pixel in the specific pixel in a first charging time, charging a G sub-pixel in the specific pixel in a second charging time, and charging a B sub-pixel in the specific pixel in a third charging time, because the charging time is short, the color lights emitted by the three charging times respectively mix into yellow light due to human vision residual error.
When one sub-pixel in the pixel starts to charge, the common voltage VCOM of the display screen is caused to fluctuate, so that the voltage of other sub-pixels in the same row changes when the other sub-pixels are charged at the next charging time, and a vector coupling voltage is generated. Since the coupling offset generated between the three horizontal pixels is affected by the magnitude, direction and number of charges of the interactions, the generated coupling voltage can be represented by a vector, for example, the vector coupling voltage is + [ delta ] V or- [ delta ] V. For example, the R sub-pixels in a given pixel row cause VCOM to fluctuate during charging, and the resulting vector coupling voltage is + Δv, which can cause the G sub-pixels in the same row to change in brightness after subsequent charging.
S2, acquiring the starting sequence of each preset sub-pixel.
The starting sequence of the sub-pixels, namely the charging sequence of the sub-pixels, and the preset starting sequence of the sub-pixels can be set in a self-defined mode according to requirements. In one example, the preset subpixel on sequence is: the sub-pixel on sequence of the nth row is: the starting sequence of the R sub-pixel, the G sub-pixel, the B sub-pixel and the n+1th row sub-pixel is as follows: b subpixel→g subpixel→r subpixel. It is understood that the preset sub-pixel turn-on sequence may be a plurality of sequential combinations among the R sub-pixel, the G sub-pixel, and the B sub-pixel, which is not specifically limited herein.
S3, aiming at each preset sub-pixel starting sequence, calculating the horizontal crosstalk value of the pixels in the appointed pixel row under the preset sub-pixel starting sequence according to the starting sequence of each sub-pixel in the preset sub-pixel starting sequence and the vector coupling voltage.
The vector coupling voltages generated by different subpixel turn-on sequences are different. For example, referring to fig. 5, in fig. 5, for example, two adjacent rows of sub-pixel on sequences are taken as examples, for example, RGB BGR in the figure, which indicates that the sub-pixel on sequence in the nth row is: the starting sequence of the R sub-pixel, the G sub-pixel, the B sub-pixel and the n+1th row sub-pixel is as follows: the B sub-pixel- & gtG sub-pixel- & gtR sub-pixel shows the fluctuation condition of VCOM caused by the corresponding sub-pixel opening sequence, wherein Gate n represents the Gate voltage of the n-th row of pixels, gate n+1 represents the Gate voltage of the n+1th row of pixels, MUXR represents the opening valve of the R sub-pixel, MUXG represents the opening valve of the G sub-pixel, and MUXB represents the opening valve of the B sub-pixel; as can be seen from fig. 5, the VCOM coupling frequency ratio and the coupling recovery time are different in different sub-pixel turn-on sequences. According to the starting sequence of each sub-pixel and the vector coupling voltage, the horizontal crosstalk value of the pixels in the appointed pixel row under the preset sub-pixel starting sequence can be calculated through vector superposition.
S4, selecting a target sub-pixel starting sequence according to the horizontal crosstalk value of the pixels under each preset sub-pixel starting sequence.
In one example, a preset subpixel on sequence with the smallest horizontal crosstalk value may be selected as the target subpixel on sequence. In a possible implementation manner, referring to fig. 6, the selecting the target sub-pixel on sequence according to the horizontal crosstalk value of the pixel under each preset sub-pixel on sequence includes:
s41, selecting a preset sub-pixel starting sequence with the minimum horizontal crosstalk value from all preset sub-pixel starting sequences as a target sub-pixel starting sequence.
In one example, referring to fig. 7, fig. 7 shows that for horizontal crosstalk values of different color block diagrams in three different preset sub-pixel opening sequences, an average value of absolute values of the horizontal crosstalk values of the color block diagrams may be calculated, and a preset sub-pixel opening sequence with the smallest average value is selected as a target sub-pixel opening sequence; the preset sub-pixel turn-on sequence with the smallest horizontal crosstalk value of the designated color block diagram (for example, the preset sub-pixel turn-on sequence with the smallest horizontal crosstalk value in the red color block diagram) may also be directly selected as the target sub-pixel turn-on sequence. In the embodiment of the present application, by selecting the preset sub-pixel on sequence with the smallest horizontal crosstalk value as the target sub-pixel on sequence, the on sequence with the smallest influence on the horizontal crosstalk can be selected from a plurality of possible preset sub-pixel on sequences. Wherein W represents white, C represents cyan, P represents violet, Y represents yellow, and K represents black.
In a possible implementation manner, referring to fig. 8, the selecting the target sub-pixel on sequence according to the horizontal crosstalk value of the pixel under each preset sub-pixel on sequence includes:
s42, selecting a preset sub-pixel starting sequence with the minimum horizontal crosstalk value smaller than a preset crosstalk threshold value when different preset images are displayed in each preset sub-pixel starting sequence, and obtaining a filtered preset sub-pixel starting sequence;
s43, selecting a preset sub-pixel starting sequence with the minimum average value of horizontal crosstalk values when different preset images are displayed as a target sub-pixel starting sequence from the filtered preset sub-pixel starting sequences.
The preset crosstalk threshold may be set according to design requirements, for example, the preset crosstalk threshold may be set to 0.4%, 0.5%, 1% or 2%, etc. In the embodiment of the application, by setting the preset crosstalk threshold, the selection range of the opening sequence with the smallest influence on the horizontal crosstalk can be reduced. The preset images can be selected by user definition according to actual situations, in an example, as shown in fig. 13, 8 preset images can be selected, in the background of L127, the middle color block is a picture with different colors, and the horizontal crosstalk values of each preset image under the three different preset sub-pixel starting sequences can be shown in fig. 7.
In the embodiment of the application, the influence of the sub-pixels in the designated pixel row on the next charging time caused by the charging voltage of the sub-pixels in the designated pixel row in the current charging time can be evaluated by acquiring the vector coupling voltage, the influence degree of the horizontal crosstalk can be evaluated by the calculated horizontal crosstalk value, and the horizontal crosstalk caused by high refresh rate can be effectively improved by selecting the starting sequence of the target sub-pixels, so that the image texture is improved.
In a possible implementation manner, referring to fig. 9, for each preset sub-pixel on sequence, calculating, according to the on sequence of each sub-pixel in the preset sub-pixel on sequence and the vector coupling voltage, a horizontal crosstalk value of a pixel in a specified pixel row under the preset sub-pixel on sequence includes:
s31, for each preset sub-pixel starting sequence, according to the starting sequence of each sub-pixel under a plurality of charging times of the preset sub-pixel starting sequence and the vector coupling voltage, vector summation of the vector coupling voltages generated by each sub-pixel in a designated pixel row under each charging time is sequentially calculated, and the coupling voltage summation of each sub-pixel under each charging time of the preset sub-pixel starting sequence is obtained.
In one example, the subpixel on sequence for the nth row is: for example, as shown in fig. 10, when the R sub-pixel is charged, the coupling voltage sum of the G sub-pixel is obtained by vector summation of the R sub-pixel in the Source left, middle and right regions with respect to the vector coupling voltage of the G sub-pixel, and the coupling voltage sum of the B sub-pixels and the coupling voltage sum of the sub-pixels in the n+1 row of sub-pixels can be obtained by charging the G sub-pixel at the next charging time due to the influence of horizontal crosstalk. In fig. 10, only three adjacent pixels are taken as an example, the number of pixels included in a pixel row is greater than three, and for each sub-pixel, the horizontal crosstalk of all pixels in the same row to the sub-pixel can be calculated.
S32, for each pixel in a designated pixel row, respectively calculating the weighted sum of the coupling voltages of all the sub-pixels in the pixel under different preset sub-pixel starting sequences based on the coupling brightness weights of the sub-pixels with different colors, so as to obtain the brightness influence value of the pixel under each preset sub-pixel starting sequence.
As can be seen from fig. 11, when the same voltage is applied to each sub-pixel, the luminance ratio of each sub-pixel is different, and the influence of the G sub-pixel on the luminance is greater. In one example, the coupling luminance weight of the G sub-pixel is 0.7, the coupling luminance weight of the r sub-pixel is 0.2, the coupling luminance weight of the b sub-pixel is 0.1, and assuming that the coupling voltage sums of the R, G, B sub-pixels of the same pixel are aV, bV, and cV in a preset sub-pixel on sequence, the weighted sum of the coupling voltage sums of the sub-pixels in the same pixel in the preset sub-pixel on sequence is calculated as follows: b×0.7+c×0.2+a×0.1, and the brightness influence value of the pixel in the preset sub-pixel on sequence is 0.7b+0.2c+0.1a.
S33, for each preset sub-pixel starting sequence, determining the horizontal crosstalk value of the pixels under the preset sub-pixel starting sequence according to the brightness influence value of the pixels under the preset sub-pixel starting sequence.
In the case where the luminance of one pixel is unchanged, the higher the luminance influence value of the pixel is, the larger the horizontal crosstalk value is. In one example, the horizontal crosstalk value may be obtained by calculating a ratio of a luminance impact value of a pixel to the luminance of an image that the pixel is required to display.
In the embodiment of the application, the influence of different sub-pixel opening sequences on brightness and horizontal crosstalk can be obtained quantitatively by calculating the vector sum of the vector coupling voltages generated by each sub-pixel in the designated pixel row under each charging time and the weighted sum of the coupling voltages of each sub-pixel in the pixel under different preset sub-pixel opening sequences.
In a possible implementation manner, referring to fig. 12, for each preset sub-pixel on sequence, calculating, according to the on sequence of each sub-pixel in the preset sub-pixel on sequence and the vector coupling voltage, a horizontal crosstalk value of a pixel in a specified pixel row under the preset sub-pixel on sequence includes:
s34, selecting a preset sub-pixel opening sequence to be analyzed currently from a plurality of preset sub-pixel opening sequences, wherein the preset sub-pixel opening sequence represents the opening sequence of each sub-pixel in a plurality of charging times;
s35, aiming at each charging time, calculating the vector sum of vector coupling voltages generated by the sub-pixels in the second pixel under the charging time due to the influence of the charging voltage of the last charging time of each sub-pixel in the appointed pixel according to the preset sub-pixel starting sequence to be analyzed and the vector coupling voltage, and obtaining the coupling voltage sum of the sub-pixels in the second pixel under the charging time, wherein the appointed pixel comprises a first pixel, the second pixel and a third pixel; the first pixel, the second pixel and the third pixel are three adjacent pixels in the appointed pixel row, and the second pixel is positioned in the middle of the first pixel and the third pixel;
s36, carrying out weighted summation on the sum of coupling voltages of all the sub-pixels in the second pixel under the preset sub-pixel opening sequence to be analyzed at present based on the preset coupling brightness weights of the sub-pixels with different colors, so as to obtain a brightness influence value of the second pixel under the preset sub-pixel opening sequence to be analyzed at present;
s37, determining the horizontal crosstalk value of the pixel under the preset sub-pixel starting sequence to be analyzed according to the brightness influence value of the second pixel under the preset sub-pixel starting sequence to be analyzed;
s38, returning to the execution step: s34, selecting a preset sub-pixel opening sequence to be analyzed currently from a plurality of preset sub-pixel opening sequences until the horizontal crosstalk value of the pixel under each preset sub-pixel opening sequence is obtained.
There are various combinations of possible on-order of the sub-pixels at various charging times, for example, RGB BGR, GBR RGB, RBG GBR, etc. By performing the steps S34-S37 a number of times, all possible horizontal crosstalk values corresponding to the sub-pixel on-order can be obtained.
In the embodiment of the application, conditions are provided for selecting the optimal sub-pixel opening sequence from the horizontal crosstalk values corresponding to all possible sub-pixel opening sequences by acquiring the horizontal crosstalk values.
The embodiment of the application also provides a sub-pixel opening method, which comprises the following steps:
according to the target sub-pixel opening sequence determined by any one of the sub-pixel opening sequence determining methods, each sub-pixel is sequentially opened to display image data.
In the embodiment of the application, the sub-pixels are turned on according to the target sub-pixel turn-on sequence, so that horizontal crosstalk can be effectively reduced, and the image quality of the display image is optimized.
In one possible implementation manner, the R sub-pixel, the G sub-pixel, and the B sub-pixel in the same pixel are sequentially arranged in the same row, and the opening sequence of the target sub-pixels in the nth row of pixels is as follows: the starting sequence of the target sub-pixels of the (N+1) th row of pixels is as follows: g sub-pixel- & gtB sub-pixel- & gtR sub-pixel, wherein N is a positive integer.
When a frame of picture is required to be displayed, starting from the first row of pixel rows of the display panel, charging the sub-pixels row by row according to the sub-pixel starting sequence, so that the whole picture is displayed. In one example, the target subpixel on sequence for row 1 pixels is: the opening sequence of the target sub-pixels of the 2 nd row of pixel rows is as follows: the opening sequence of the target sub-pixels of the 3 rd row of pixel lines is the same as the opening sequence of the target sub-pixels of the 1 st row of pixel lines, the opening sequence of the target sub-pixels of the 4 th row of pixel lines is the same as the opening sequence of the target sub-pixels of the 2 nd row of pixel lines, and the target sub-pixels are sequentially displayed.
In the embodiment of the application, the determined target sub-pixel opening sequence is sequentially charged on the display panel, and a better quality picture can be displayed by reducing horizontal crosstalk.
The embodiment of the application also provides a pixel driving circuit, which generates a sub-pixel driving signal according to the target sub-pixel starting sequence determined by any one of the sub-pixel starting sequence determining methods
The embodiment of the application also provides a display panel, and each sub-pixel is turned on according to the sub-pixel turning-on method.
The embodiment of the application also provides a display, which comprises the display panel.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In this specification, each embodiment is described in a related manner, and each embodiment is mainly described in a different manner from other embodiments, so that identical and similar parts between the embodiments are referred to each other.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (9)
1. A method for determining a sub-pixel turn-on sequence, the method comprising:
aiming at a sub-pixel in a specified pixel row of a display panel to be tested, acquiring vector coupling voltage generated in the next charging time by other sub-pixels in the same row due to the charging voltage of the sub-pixel in the current charging time;
acquiring the starting sequence of each preset sub-pixel;
for each preset sub-pixel opening sequence, calculating the horizontal crosstalk value of the pixels in the appointed pixel row under the preset sub-pixel opening sequence according to the opening sequence of each sub-pixel in the preset sub-pixel opening sequence and the vector coupling voltage;
selecting a target sub-pixel starting sequence according to the horizontal crosstalk value of the pixels under each preset sub-pixel starting sequence;
the calculating, for each preset sub-pixel turn-on sequence, a horizontal crosstalk value of a pixel in a specified pixel row under the preset sub-pixel turn-on sequence according to the turn-on sequence of each sub-pixel in the preset sub-pixel turn-on sequence and the vector coupling voltage, includes:
for each preset sub-pixel opening sequence, sequentially calculating vector sums of vector coupling voltages generated by sub-pixels in a designated pixel row under each charging time according to the opening sequence of each sub-pixel under a plurality of charging times of the preset sub-pixel opening sequence and the vector coupling voltage to obtain the coupling voltage sums of the sub-pixels under each charging time of the preset sub-pixel opening sequence;
for each pixel in a designated pixel row, respectively calculating the weighted sum of the coupling voltages of all the sub-pixels in the pixel under different preset sub-pixel starting sequences based on the coupling brightness weights of the sub-pixels with different colors, so as to obtain the brightness influence value of the pixel under each preset sub-pixel starting sequence;
for each preset sub-pixel opening sequence, determining the horizontal crosstalk value of the pixels under the preset sub-pixel opening sequence according to the brightness influence value of the pixels under the preset sub-pixel opening sequence.
2. The method according to claim 1, wherein for each preset sub-pixel turn-on sequence, calculating the horizontal crosstalk value of the pixels in the specified pixel row under the preset sub-pixel turn-on sequence according to the turn-on sequence of each sub-pixel in the preset sub-pixel turn-on sequence and the vector coupling voltage comprises:
selecting a preset sub-pixel opening sequence to be analyzed currently from a plurality of preset sub-pixel opening sequences, wherein the preset sub-pixel opening sequence represents the opening sequence of each sub-pixel under a plurality of charging times;
calculating vector sums of vector coupling voltages generated by sub-pixels in a second pixel under the charging time due to the influence of the charging voltage of the last charging time of each sub-pixel in a specified pixel according to the preset sub-pixel starting sequence to be analyzed and the vector coupling voltage at present for each charging time, and obtaining the vector sums of the vector coupling voltages of the sub-pixels in the second pixel under the charging time, wherein the specified pixel comprises a first pixel, the second pixel and a third pixel; the first pixel, the second pixel and the third pixel are three adjacent pixels in the appointed pixel row, and the second pixel is positioned in the middle of the first pixel and the third pixel;
based on the coupling brightness weights of the preset sub-pixels with different colors, carrying out weighted summation on the coupling voltage sum of each sub-pixel in the second pixel under the preset sub-pixel starting sequence to be analyzed at present, and obtaining the brightness influence value of the second pixel under the preset sub-pixel starting sequence to be analyzed at present;
determining the horizontal crosstalk value of the pixel under the preset sub-pixel starting sequence to be analyzed according to the brightness influence value of the second pixel under the preset sub-pixel starting sequence to be analyzed;
returning to the execution step: and selecting a preset sub-pixel opening sequence to be analyzed currently from a plurality of preset sub-pixel opening sequences until the horizontal crosstalk value of the pixel under each preset sub-pixel opening sequence is obtained.
3. The method of claim 1, wherein selecting the target subpixel on sequence based on the horizontal crosstalk value of the pixel under each preset subpixel on sequence comprises:
and selecting a preset sub-pixel starting sequence with the minimum horizontal crosstalk value from all preset sub-pixel starting sequences as a target sub-pixel starting sequence.
4. The method of claim 1, wherein selecting the target subpixel on sequence based on the horizontal crosstalk value of the pixel under each preset subpixel on sequence comprises:
selecting a preset sub-pixel starting sequence with the minimum horizontal crosstalk value smaller than a preset crosstalk threshold value when different preset images are displayed from all preset sub-pixel starting sequences, and obtaining a filtered preset sub-pixel starting sequence;
and selecting a preset sub-pixel starting sequence with the minimum average value of horizontal crosstalk values when different preset images are displayed from the filtered preset sub-pixel starting sequence as a target sub-pixel starting sequence.
5. A sub-pixel turning on method, the method comprising:
the sub-pixels are turned on sequentially to display image data according to the target sub-pixel on sequence determined by the sub-pixel on sequence determining method according to any one of claims 1 to 4.
6. The method of claim 5, wherein the R, G, and B sub-pixels in the same pixel are arranged in the same row in sequence, and the target sub-pixel on sequence of the nth row of pixels is: the starting sequence of the target sub-pixels of the (N+1) th row of pixels is as follows: g sub-pixel- & gtB sub-pixel- & gtR sub-pixel, wherein N is a positive integer.
7. A pixel driving circuit characterized in that a subpixel driving signal is generated according to a target subpixel on sequence determined by the subpixel on sequence determining method according to any one of claims 1 to 4.
8. A display panel, characterized in that each sub-pixel is turned on according to the sub-pixel turning on method as claimed in claim 5 or 6.
9. A display comprising the display panel of claim 8.
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